The Best Testosterone Booster Supplements of 2019 – Reviews, Results, and Much More

best testosterone boosters 2019


There is no question that finding the right testosterone booster is stressful. Fortunately, The Supplement Reviews has taken the time to do a good deal of the work for you. We’ve selected what we believe are the top 5 best testosterone boosters of 2019.

Before reading this, it is important to understand the essential focal points of our staff’s review process. We take into account the ingredients, the ingredient amounts, label disclosure of ingredient amounts, the history of the manufacturer, and a combination of other user reviews from various sources.

testotek review

TestoTEK Review

RATING: 5.0/5.0 

The rise to the top was anything but steady for TestoTEK, this Testo booster rocketed to the top of almost every best testosterone booster list in a matter of what seemed like minutes. A product of the always reliable TEK Naturals, TestoTEK is one of the most potent and highly-reviewed Testo boosters on the market. TestoTEK uses scientifically proven ingredients and doesn’t short the consumer on amounts. This is the most efficient and robust Testo-Booster supplement available online today and it isn’t even that close (at least, anymore).

If TestoTEK has any downside, it may be that it cost a bit more than most of its competitors (however, not by much). The good news with that is that you won’t be throwing your money away and making another purchase of a competitor . TestoTEK is the real deal, it works, and it is used by folks from every walk. Of all the top testosterone boosters, TestoTEK reigns supreme.


testogen review

Testogen Review

RATING: 4.8/5.0 

Testogen may be number 2 on our list, but certainly, don’t consider passing on this incredibly powerful testosterone booster. Testogen fills out the number 1 spot on a number of other Testosterone review sites and for good reason. Testogen is one of the most popular Testo boosters of 2019.

Back in 2018, Testogen updated its formula with 5 new ingredients, including vitamin K and Magnesium. The benefit of vitamin K is huge seeing that it helps the body more intelligently absorb vitamin D (which is super important to testosterone production). The formula is improved to compete with TestoTEK – Mission accomplished.


Prime Male - Best booster on the Market

Prime Male Review

RATING: 4.0/5.0 

Prime Male is a solid number 3 on our testosterone boosters list, but there is a little distance between Prime Male and our other top two contributors (Testogen and TestoTEK, which are listed above). Prime Male‘s formula is robust and more potent than most of your average plays out there.

Some Prime Male reviews assert that the formula has “just the right amount of ingredients.” For some men, too many potent ingredients all at once, like what is found in TestoTEK, give them “too much” of a boost (yes, this happens, believe it or not). Our Prime Male review is worth a read.


Testofuel Testosterone Booster Review

TestoFuel Review

RATING: 3.5/5.0 

Peak Health Labs, Inc. is one of the biggest supplement manufactures in the world. One of their main conceptions, TestoFuel, is a darn good option for any man attempting to naturally boost his testosterone. TestoFuel aims to increase libido, lower body fat, and boost the energy levels. For the most part, TestoFuel ingredients back up the manufacturer’s claims. This is a solid Testo booster and definitely worth learning more about.



Nugenix Review

RATING: 3.2/5.0 

Nugenix is potentially the most mainstream product on our list. Former White Sox first basemen, Frank Thomas, is the Nugenix spokesman in a series of ads that air during prime time news across multiple markets and demographics. If you’ve looked for a testosterone booster online or offline, you’ve no doubt come across Nugenix.

Nugenix is definitely a top player in the world of natural testosterone boosters, but over the years, its ingredient amounts and diversity have been overshadowed by less popular brands looking to take away Nugenix‘s market share. Nugenix is always a solid purchase, hence why we continue to feature it on our top testosterone list. If Nugenix ever decides to update their formula again, which we do expect them to do, anticipate them to move up our top testosterone boosters list in a hurry. This company is too big and too established to fail.



While there are more than a handful of solid top testosterone boosters on the market, these are five options you simply can’t go wrong with. If you don’t mind spending a little extra cash, TestoTEK is a sure bet, as is Testogen. Beyond that, the other three formulas are worthy options for those who want one of the top testosterone boosters at a more modest price.

How To Evaluate A Testosterone Booster – The ULTIMATE Guide

The Ultimate Guide to Testosterone BoostersThis is the ultimate guide for anybody out there in search of a high quality, effective testosterone booster…the key words there being high quality and effective.

There are literally thousands of testosterone boosters available on the market, and as a consumer, you have to be aware of scams, duds, and ineffective products.

Let me be 100% clear, this is NOT just another list of specific test boosters we recommend…this is guide is designed to teach you how to evaluate testosterone boosters on your own.

After you’ve read through this guide, you will know everything there is to know about testosterone boosters and how to differentiate between good and bad ones…

You’ll be able to take one look at a nutrition label and immediately know whether or not the product is worth your money…

Forget about having to take someone else’s word for it or having to consult an “expert.”

By the end of this guide, YOU will become the expert.

Let’s dive in!

Table of Contents

Chapter 1: What are Testosterone Boosters?

Chapter 2: Testosterone Boosters Vs. Testosterone Replacement Therapy & Testosterone Gel

Chapter 3: Low Testosterone & The Benefits of Testosterone Boosters

Chapter 4: The Science Behind Testosterone Boosters

Chapter 5: How To Read Testosterone Booster Nutrition Labels

Chapter 6: Testosterone Booster Side Effects

Bonus Chapter: How We Arrived At Our Decision For Our #1 Ranked Test Booster

Chapter 1: What Are Testosterone Boosters?

What Are Testosterone BoostersIt’s no secret that Testosterone Boosters are the most effective, inexpensive, safe, and reliable solution to Low T (low testosterone) as they’ve become extremely popular in 2018…but what exactly is a testosterone booster?

Everyone has heard of them before, but almost nobody has a proper understanding of what it is they’re even hearing about. We’re going to clear up all the confusion surrounding Testosterone Boosters, and by the end of this chapter, you’ll know exactly what it is you’re buying before you spend money on one.

How Testosterone Boosters Work

The first important point to understand is that Testosterone Boosters do NOT contain synthetic testosterone like other solutions do such as Testosterone Replacement Therapy or Testosterone Gel (more details on those options in the next chapter).

Instead of directly injecting testosterone from the outside like other methods do, Testosterone Boosters contain 100% natural ingredients that stimulate natural production of testosterone from within your body…

That is the single most important thing to understand about Testosterone Boosters. They are the only way to achieve increased testosterone levels naturally, because they’re the only option that stimulates internal testosterone boosting as opposed to externally administered methods.

Additionally, they are the simplest and most convenient option when it comes to T boosting…plus, they’re shockingly inexpensive.

Using a test booster simply involves taking 2-3 capsules (full of natural herbs) per day, and a 30 day supply only costs you about $60-70 on average…that is, if you’re investing in a testosterone booster that actually works.

Testosterone Boosters that don’t work due to small dosage sizes and/or lack if clinically proven ingredients will be less expensive, but they’re ultimately a waste of money because they do not work.

It’s 100% worth it to spend $10-15 extra bucks on a high quality testosterone booster instead of opting for a cheaper one just to save some money…BUT, you do not have to take our word for it.

By the end of this guide, you will understand for yourself the differences between high quality and low quality test boosters, why it’s important to pick a top shelf product over a cheap one, and how to recognize a good one versus a bad one.

Internal vs. External Testosterone Boosters

Is it possible to directly inject testosterone and experience benefits? Of course, but at what cost? In Chapter 2, we break down the exact costs and side effects of external testosterone boosting methods, but for now, we’re going to focus more on internal testosterone boosting.

When your body experiences an increase in testosterone, but it doesn’t know where it came from, it’s not going to utilize it because it’s going to see it as foreign and assume it’s unsafe (accurate assumption)…

On the other hand, if you can ingest ingredients that get your body to produce more of its own testosterone, that is when you can experience life changing benefits…

Your body will recognize the testosterone as its own, and therefore efficiently utilize it rather than reject it…Testosterone Boosters lead to higher testosterone levels and more efficient utilization of free testosterone due to the natural manner in which it’s being produced.

Testosterone Boosters contain blends of natural herbs, amino acids, vitamins, and other nutrients that work synergistically to stimulate an internal response once ingested…no other method of testosterone boosting can produce that effect, and that’s why Test Boosters are so revolutionary.

So, knowing what you know now about the body’s response to synthetic testosterone versus natural testosterone, which one would you rather use? To learn more about your options, read this next chapter…

Chapter 2: Testosterone Boosters Vs. Testosterone Replacement Therapy & Testosterone Gel

Testosterone Boosters versus Testosterone Replacement and GelsOption #1: Testosterone Replacement Therapy

Once upon a time, when men would experience declining testosterone levels, the course of action was to schedule weekly doctor’s visits for synthetic testosterone injections…sounds pretty awful right?

This treatment option is known as Testosterone Replacement Therapy (TRT). It’s extremely expensive at about $395 per month on average, and somehow even more painstaking than it is expensive. But here’s the real kicker…

IT DOESN’T EVEN WORK! Yes, that’s right. You’re paying about $400 per month to get injected with fake testosterone that doesn’t produce any real results…

In the rare instances where men report positive results from TRT, they typically have a long list of Testosterone Replacement Therapy side effects to talk about as well…so why is this the case?

With TRT, the testosterone in use is synthetic. Your body does NOT respond well to synthetic hormones…it needs the real deal, and you are NOT getting the real deal with TRT.

Synthetic testosterone is rejected by your body, and as a result, you are not able to properly utilize the testosterone or experience the benefits…your body treats synthetic testosterone as a foreign invader, and actually fights against it.

Your body’s attempt to ward off what it views as a foreign invader is what causes the side effects people experience while undergoing TRT…long story short, you want to avoid any method that involves the use of synthetic testosterone at all costs.

And speaking of costs, don’t forget how ridiculously high Testosterone Replacement Therapy cost is (about $400 per month).

It’s important to make sure you are utilizing 100% natural, authentic testosterone, and the only way to boost your natural testosterone levels is by stimulating your body to produce more of its own testosterone through the use of an effective testosterone booster.

Here are two studies about the adverse effects of Testosterone Replacement Therapy:

Study: Adverse Effects of Testosterone Replacement Therapy

Study: Risks of Testosterone Replacement Therapy

Okay, enough about Testosterone Replacement Therapy. Let’s talk your second option if you decide against TRT…

Option #2: Testosterone Gel

Congratulations! If you’ve gotten this far in our Testosterone Boosters 101 Guide, that means you have decided against option #1, which was TRT…good call!

BUT, is option #2 any better? Let’s have a look…

Testosterone Gel has become super popular in recent years because men are finally beginning to realize that Testosterone Replacement Therapy is not the solution…plus, most guys don’t want to spend the $395 per month to have it done.

So, the next thing to come out was Testosterone Gel, which was a much cheaper and more elegant solution for men suffering from Low T (low testosterone)…

Testosterone Gel is cheaper, costing about $200-$300 per month on average. Plus, it’s much easier to use…all you do is topically apply the gel every day, which is much more convenient than having to visit the doctor’s office every week.

HOWEVER, the testosterone in use when it comes to Testosterone Gel is again synthetic, so many of the same issues are present with this option as are present with TRT.

Is it a step up from TRT? Certainly…but we still highly recommend avoiding Testosterone Gel because of the fact that you would still not be using authentic testosterone, which means it’s not going to be effective and will likely cause side effects.

Not to mention, did you know that Testosterone Gel can actually rub off onto your wife and kids? That’s right…if you apply the gel, and then give your wife a hug, you risk rubbing some of the gel off onto her.

Now, not only are you using an ineffective testosterone deficiency solution and probably experiencing side effects from it, but you’re also causing your wife to experience side effects!

The bottom line is Testosteorne Gel benefits are very limited, and yet Testosterone Gel side effects run rampant, which is why you should avoid it at all costs.

If you’re interested, you can read one of our Testosterone Gel reviews here.

Finally, let’s talk about the latest and greatest solution for those in search of higher testosterone levels…

Option #3: Testosterone Booster

Testosterone Gel solves a couple of problems…it saves you some money, and it’s much more convenient than Testosterone Replacement Therapy, BUT it still has several MAJOR flaws.

In come Testosterone Boosters: the natural, inexpensive, and most importantly, effective solution for men who need to boost their testosterone levels.

We already talked about what Testosterone Boosters are and got into all the details in Chapter 1, so in this chapter, we’re just going to briefly explain why they’re a better option than TRT or Testosterone Gel.

Testosterone Boosters are the only option that involves the use of NATURAL testosterone. The only way to boost your T levels and actually reap the benefits is by getting your body to naturally produce testosterone from within…

Options #1 and #2 both involve forcing synthetic testosterone in from the outside, and therein lies the problem. If you want to experience a real change and feel real results, the testosterone must be produced from within your body…

We touched on this issue earlier in the guide, but we can not place enough emphasis on how important that detail is, so we’re going to say it one last time…testosterone must be produced inside, NOT outside the body.

Chapter 3: Low Testosterone & The Benefits of Testosterone Boosters

Low testosterone and benefits of testo boostersLow Testosterone Symptoms And Background

Before we talk about the benefits, let’s go over who can benefit the most from Testosterone Boosters…

The main reason men take Test Boosters is because they’re suffering from Low Testosterone (Low T), or at least experiencing some of the symptoms of Low T.

Low Testosterone Symptoms include but are not limited to…

  • Low sex drive
  • Sexual dysfunction
  • Issues with erection achievability and sustainability
  • Decreased semen volume
  • Hair loss
  • Fat gain
  • Muscle loss
  • Chronic fatigue
  • Mood swings and depression

If you’re experiencing one or more of these symptoms, there’s a good chance you’ve got Low T…Low Testosterone sucks, but the good news is it is NOT hard to treat.

Just so you know, this is not some random disease that you just happened to contract…this is an affliction that effects roughly 30% of aging men and is entirely natural.

As you get older, your testosterone levels will naturally start to decrease…this is an unfortunate fact, but you’re fortunate to be alive in 2018 as we have developed effective solutions to the problem at this point.

If you want to get technical about Low T, a blood test showing anything below approximately 300 ng/dl (nanograms per deciliter) would be officially considered Low Testosterone by the U.S. Food And Drug Administration…

However, it’s important to note that you can exhibit some of the symptoms of Low Testosterone even if your levels are not below 300 ng/dl…many men start experiencing symptoms long before they are technically considered testosterone deficient.

Now that we’ve covered the Low Testosterone Symptoms and provided some background on the condition, let’s talk about what Testosterone Boosters can do for you.

Here’s a list of the most commonly reported benefits of testosterone boosters…

  • Elevated libido
  • Enhanced sexual performance
  • Improved erection quality and achievability
  • Decreased body fat percentage
  • Increased production of lean muscle mass
  • Improved mood
  • Higher energy levels
  • Increased productivity and mental clarity

The key areas most men are seeking to make improvements in are sexual performance and physical appearance, and these are the areas that high quality Testosterone Booster formulas are most heavily focused on enhancing…

The reason you had such a high sex drive, healthy sex life, and amazing body in your twenties can be summarized in one word: TESTOSTERONE.

Low levels of this extremely important hormone are what’s causing your issues, so the solution is simple…boost your levels.


In this next chapter, we’re going to discuss the science behind testosterone boosters and talk about what ingredients produce which benefits…this is important to understand because it will improve your ability to differentiate between test boosters that work and ones that don’t…

Chapter 4: The Science Behind Testosterone Boosters

the science behind testosterone boostersIt’s time to get down to the nitty gritty…run for cover gentlemen, because we’re about to drop a boatload of science bombs on you.

We’ve talked about what test boosters are, how they work, and what makes them better than other testosterone boosting options, but now it’s time to talk about WHY they work…

In other words, exactly what are the ingredients you will typically find in testosterone boosters, and how does each ingredient work?

To be clear, we’re not going to talk about any testosterone booster ingredients that do not work in this chapter…we are only going to be breaking down the ingredients that do work.

Here is a list of 9 clinically proven ingredients to keep an eye out for when you’re shopping for a testosterone booster…

  • D-Aspartic Acid
  • Fenugreek
  • Siberian Ginseng
  • Stinging Nettle Root
  • Mucuna Pruriens
  • Oyster Extract
  • Vitamin D3
  • Vitamin K
  • Zinc

These nine ingredients are the most thoroughly researched and clinically proven nutrients out there with regard to boosting testosterone levels…

When you’re looking for a testosterone booster, you should try to find one that has as many of these ingredients on the label as possible…it’s difficult to find a test booster that contains all 9 of these ingredients, but there are a few that at least contain most of them.

With that being said, we don’t expect you to take our word for it when it comes to the ingredients either…we’re going to provide you with scientific explanations and data on these ingredients to show you that we’ve done our homework.

We know which ingredients actually work, and after reading this chapter, so will you.

Of these 9 vital ingredients, we’ve selected the 5 most crucial ones to look for on the nutrition label…this was difficult because all 9 are very important, but these 5 have the most clinical proof and scientific data behind them.

Here’s the science behind our top 5 most important ingredients to look for on a testosterone booster’s nutrition label…

D-Aspartic Acid has been clinically tested and proven to stimulate the release of luteinizing and growth hormones in the brain, which then directly triggers increased testosterone production.

Due to the simple and reliable science behind D-Aspartic Acid, it can be found in the vast majority of effective testosterone boosters. With that being said, it can also often be under-dosed.

We recommend utilizing a supplement that contains at least 2,000 MG of D-Aspartic Acid per serving, since this is the dosage size that has been clinically proven to produce benefits.

Men who regularly supplemented with this dosage size of D-Aspartic Acid showed not only significantly boosted testosterone levels, but also the added benefit of increased sperm motility.

D-Aspartic Acid is probably the most clinically-backed, effective testosterone boosting nutrient in existence…if you’re looking at a T Booster and you don’t see this ingredient on the label, do not buy it.

Here are some scientific studies on how D-Aspartic Acid effects testosterone levels:

Study: The Role of D-Aspartic Acid in The Release of Testosterone

Study: The Effects of D-Aspartic Acid on Testosterone Levels

Study: Supplementation of D-Aspartic Acid in Resistance Trained Men

Study: Effects of D-Aspartic Acid on Basal Testosterone Levels

Fenugreek is another absolutely crucial ingredient when it comes to Testosterone Boosters. Some ingredients can be helpful but are considered optional…this is not one of those ingredients.

Fenugreek is yet another nutrient that you need to see on the label…otherwise, you need to look for another testosterone booster. Here’s why…

It contains saponins that have been clinically proven to increase levels of sex hormones in men including Testosterone and Androgen.

Until the discovery of Fenugreek, there was no safe and natural way to increase the levels of these hormones, which is why this nutrient is absolutely revolutionary…we recommend a dosage size of at least 70 milligrams per serving.

Here is a scientific study on how Fenugreek effects testosterone levels:

Study: The Effects of Fenugreek on Hormonal Profiles In Resistance Trained Males

Siberian Ginseng has been shown to increase blood flow to the penis, improve erection quality, and increase nitric oxide levels…

All of these benefits serve to improve your sexual health and performance, which as we know, is one of the key concerns of men who suffer from Low Testosterone.

When you’re examining the nutrition label, look for a dosage size of about 50 milligrams per serving.

Here are some scientific studies on how Ginseng effects testosterone levels:

Study: Effects of Panax Ginseng Saponins on Male Fertility

Study: Effects of Panax Ginseng on Testosterone Levels

Study: Effects of Ginseng on Two Main Sex Steroid Hormone Receptors

Study: Effects of Ginseng on Growth Hormone, Testosterone, Cortisol, And IGF-1

Stinging Nettle Root is one of the most underrated and vital testosterone booster ingredients of all time. It’s underrated and often overlooked because it does not directly boost testosterone, but the effect it has on testosterone is equally as important.

When you have higher testosterone levels, your Sex Hormone Binding Globulin (SHBG) will attempt to bind itself to the testosterone, thereby rendering it ineffective…

Stinging Nettle Root blocks SHBG and prevents it from binding to testosterone, thereby freeing up your testosterone and allowing your body to fully utilize it.

Here are some scientific studies on how Stinging Nettle effects testosterone levels:

Study: Effects of Stinging Nettle on Testosterone Induced Prostatic Hyperplasia

Mucuna Pruriens is rarely found on the label of testosterone boosters because it’s expensive and hard to find, so most companies are too lazy to include it in their formula…

BUT, it is absolutely crucial that you find a testosterone booster that contains at least 150 milligrams per serving of Mucuna Pruriens, and here’s why…

Mucuna Pruriens provides L-Dopa, which assists the body in the actual creation of testosterone as well as human growth hormone (HGH). This allows men to shred fat and gain muscle at an exponentially faster rate, but that’s not all…

Mucuna has been shown to reduce Cortisol levels, and Cortisol was shown in several studies to impede testosterone production. Therefore, less cortisol means more testosterone.

Here are some scientific studies on how Mucuna Pruriens effects testosterone levels and male fertility:

Study: Mucuna Pruriens Improves Male Fertility

Study: Mucuna Pruriens Recover Spermatogenic Loss

Study: Mucuna Pruriens Reduces Stress And Improves Semen Quality

Chapter 5: How To Read Testosterone Booster Nutrition Labels

How to read a testosterone booster labelThis is the chapter that’s really going to turn you into an expert…by the end of this chapter, you’ll be able to take one look at a testosterone booster’s nutrition label and immediately know whether or not it’s worth your money.

So, read on if you’re ready to become a true testosterone booster guru…

Proprietary Blends

The first and perhaps most important point we need to make is to AVOID PROPRIETARY BLENDS AT ALL COSTS…what’s a proprietary blend?

A proprietary blend is what companies allegedly use to “protect their formulas.” It basically means they’re allowed to leave the dosage amounts of the ingredients UNDISCLOSED…

They claim that this is to prevent anyone from ripping off their formulas, but the real reason they do this is so that they can put tiny dosages in without the consumer knowing.

When you see a proprietary blend, you should immediately move on. A proprietary blend means that you do not know what’s in the supplement

Therefore, you can not effectively evaluate it or determine whether or not it works…and perhaps more importantly, you don’t know whether or not it’s even safe for you to take because you don’t even know what’s in there!

So how do you recognize a proprietary blend when you see one? It’s simple…

When you look at the label and see a list of ingredients, but the ingredients do NOT have dosage numbers next to them, that is a proprietary blend, and you should avoid that product.

Dosage Sizes and Overall Potency

In chapter 4, we talked about specific dosage amounts you should look for with regard to certain key ingredients.

We’re not going to get into any more specific dosage sizes, as there really is no “general rule of thumb” when it comes to dosages…every ingredient is different, and every one has a different dosage size requirement for efficacy.

However, we do want to simply point out two things…

1: If you can’t see the dosage size, that means you’ve got a proprietary blend…and as you know by now, that means you should not buy that booster.

2: Even if a product contains clinically proven ingredients, they will not work if the dosages aren’t large enough. Clinically proven nutrients MUST also be dosed in clinical amounts, otherwise they’re basically useless.

Keep an eye out for the key ingredients we went over in chapter 4, and be sure to pay attention to whether or not the dosage sizes meet the requirements we mentioned in chapter 4.

Last but not least, you can add up the dosage amounts for ALL of the ingredients to calculate the overall potency, which is the total amount of milligrams you’re consuming in every serving.

For a testosterone booster, the overall potency should be at least 2,000 milligrams per serving. Anything lower than 2,000 milligrams per serving is a NO-GO.

Clinically Proven Ingredients

Testosterone Boosters MUST utilize ingredients that have been clinically proven. You may have heard this phrase a lot, but what does it actually mean?

“Clinically proven” means that the ingredient has been tested in a clinical setting on humans, and was proven to work

When a supplement contains clinically proven ingredients, you don’t have to worry that it might not work, because it has been proven to work.

In chapter 4, we provided you with a list of testosterone booster ingredients that have the most clinical data to support their effects.

Synergistic Formulas

This may seem like an obvious point to some of you who know supplements very well, but for beginners, this could be new information

It’s always best to choose comprehensive, synergistic Testosterone Boosters over single-ingredient supplements that lack synergy…

In other words, you’re going to get a lot more benefits from a supplement that combines several ingredients synergistically, as opposed to a supplement that attempts to utilize only one or two ingredients.

For example, D-Aspartic Acid is a proven testosterone boosting ingredient, so some people think they can just supplement with pure D-Aspartic Acid…will this produce benefits? Sure, but nowhere near the caliber of benefits you would see if you took a supplement that combines D-Aspartic Acid with several other proven test-boosting ingredients.

Standardized Ingredients vs. Raw Ingredients

This last point is a little more advanced, but it’s actually very simple to understand, and it will allow you to see just how many Testosterone Boosters out there are actually scams…spoiler alert: ALMOST ALL OF THEM ARE.

Each ingredient contains an active compound…for example, the active compound in Mucuna Pruriens is L-Dopa. Truly top notch supplements use ingredients that are standardized to high percentages of the active compounds in the ingredients…

Mucuna Pruriens should be standardized to about 30-40% L-Dopa in order to truly be effective. If you see this ingredient on the label, and it does NOT specify the percentage to which it is standardized, that means it is NOT standardized at all…and that’s bad.

You want to see ingredients on the label that are standardized, and if they’re not standardized, then you should avoid that testosterone booster. You will be shocked at how many test boosters out there do not contain standardized ingredients…

Here’s an example of what a standardized ingredient dosage looks like on a nutrition label…

Mucuna Pruriens (Std. to 40% L-Dopa) 175 MG.

THAT is what pretty much the whole label should look like…you should be able to see the dosage size AND the standardization level.

Quick note: some ingredients can not be standardized, so don’t expect every single ingredient to be standardized. Just make sure to avoid supplements in which none of the ingredients are standardized.

Chapter 6: Testosterone Booster Side Effects

Side effects of testosterone boostersTwo of the most common questions we get are, “What are the side effects of testosterone boosters?” and “Are testosterone boosters safe?”

People hear about test boosters and read about them, and they assume it’s too good to be true…they think there MUST be some sort of down side.

Well, the truth is, there truly is little to no down side at all when it comes to 100% natural Testosterone Boosters…the key words in that sentence being “100% natural.”

If you use Testosterone Gel or try Testosterone Replacement Therapy, you are going to experience side effects…there’s almost no doubt about it because these are non-natural methods of testosterone boosting.

Like we talked about in chapter 2, your body responds poorly to synthetic testosterone, and THIS is what creates side effects…

On the other hand, 100% natural Testosterone Boosters stimulate the creation of natural testosterone, which means they do not produce side effects.

While it’s extremely uncommon to experience Testosterone Booster side effects, here is a list of some of the ones that have been reported on rare occasions (likely because the user was taking a low quality testosterone booster).

  • Stomach discomfort
  • Oily skin
  • Acne
  • Difficulty sleeping
  • Prolonged erections
  • Water retention
  • Minor ankle swelling

Again, we want to stress that these side effects are EXTREMELY uncommon with natural Testosterone Boosters. These are side effects you are much more likely to experience with the use of synthetic testosterone boosting methods…

However, we did want to provide you with this list just so that you’re aware of it. After all, every person is different, and it’s possible that some people may experience testosterone booster side effects even though it’s unlikely.

Even if you were to experience one of two of these minor side effects, there is still way more upside than there is downside when you consider all of the testosterone booster pros and cons (there are basically no cons 90% of the time).

Here’s a study on testosterone booster side effects in case you’re interested in reading more:


Bonus Chapter: How We Arrived At Our Decision For Our #1 Ranked Test Booster

best testosterone boosterIn short, we applied all of the principles and methods of evaluation described in this guidebook to over 100 Testosterone Boosters, and we found that only 2-3 boosters actually met every single one of our requirements.

So, let’s go over the qualifications of our #1 ranked booster

  • 100% natural ingredients
  • Contains ALL 9 of the most clinically proven ingredients
  • Synergistic formula
  • Overall potency of about 2,500 milligrams per serving
  • Does NOT use a proprietary blend
  • Dosage sizes meet clinical standards
  • The ingredients are actually standardized (this is very rare to see)
  • No side effects have been reported

As you can see based on everything we’ve covered in this guidebook, our #1 ranked booster meets every one of our guidelines. There were a couple other supplements that came close, but this is the only one that met every single requirement.

If you’re interested in learning more about our current top ranked booster, you can click the link below to visit the official TestoTEK website.

The Best Testosterone Booster of 2019

What Is The Cause of My Low Testosterone?

Low Testosterone CausesTestosterone is a steroid hormone found in both humans and vertebrates. It is from the androgen group and gets secreted by the male testicles. In rare cases, female ovaries release it too. The adrenal glands release a bit of testosterone as well.

Testosterone is important to men as it plays a critical role in the development of male reproductive tissues. The testes and prostate grow in relation to the levels of testosterone in the body. It also contributes to the development of other parts of the body such as muscle growth, the growing of pubic hair and bone mass. Testosterone also significantly impacts the male sex drive.

The Causes of Low Testosterone in Men

Low testosterone (Low T), a condition otherwise known as hypogonadism, is caused by several factors. Age is among these factors. As one grows older, the testosterone levels in the body tend to decrease. Other low testosterone causes include tumors on the pituitary gland, testicle infections or injury and an increase in body fat.

Overweight men risk having low testosterone levels because the excess body fat leads to testosterone breakdown. When testosterone gets broken down in the body fat cells, it leads to a deficiency. At times, the breakdown could even convert testosterone into estrogen.

Another cause of low testosterone in men is diabetes. Men who suffer from this condition risk having low testosterone in their bodies and the compromised glucose levels harm cells in the testicles. As a result, the damaged cells (responsible for producing testosterone) can no longer function properly. Hence, with no new production of testosterone hypogonadism sets in.

Natural Ways of Increasing Testosterone Levels

Losing Weight
As discussed above, high fat levels lead to low testosterone levels. So if you’re struggling with Low T and you have extra body fat consider losing weight. By limiting the amount of sugar intake, starches and refined carbohydrates, you will effectively lose weight. Avoid foods that contain sweeteners and soda as well. Per day, you should consume a maximum of 25 grams of sugar.

Enrolling in a fitness program can help reduce body fat. It works even better in conjunction with sporadic fasting. Intermittent fasting helps reduce age-related testosterone decline by boosting hormones that in turn increase testosterone production. The exercise procedure should be as follows.

First, warm up for around three minutes. You should then exercise as fast and as hard as you can for the next 30 seconds. After that, recover moderately for around 90 seconds. Then, you should repeat the high-intensity exercise for about seven more times. The entire process takes around twenty minutes. Practice this as often as possible and you will record a considerable increase in testosterone levels.

Consuming Zinc-Rich Foods
Zinc plays a significant role in the production of testosterone hormone. You can increase your testosterone levels within six months by taking foods and supplements that are rich in zinc. Some of the foods that are rich in zinc include protein-rich foods and raw milk products. Yogurt, raw cheese and kefir are examples of raw milk products. You should also avoid over-cooking food as this reduces the zinc level in the food.

Increasing Vitamin D
Vitamin D helps in the development of healthy sperm nucleus. Unknown to many, it also increases levels of testosterone. Years ago, the recommended levels were 40-60 nanograms per milliliter. However, that has now risen to 50-70 nanograms per milliliter. One of the most effective and cheapest ways of increasing vitamin D levels, is basking in the sun. However, there are modern supplements that work effectively too.

Increased Intake of Branch Chain Amino Acids (BCAAs)
Research suggests that BCAAs lead to higher testosterone levels. While BCAAs are mostly available in supplement form, you can get them from dairy products as well as whey protein products. You can also boost BCAA levels by consuming food-based leucine.

Reduce Stress
Stress leads to the release of cortisol. Otherwise called the stress hormone, it blocks testosterone effects. Chronic stress, therefore, may lead to prolonged blockage of testosterone effects. In the end, you may experience low testosterone levels. Stress can be reduced using simple techniques such as prayer, yoga, and meditation. Make use of these among other stress relieving techniques to avoid chronic stress.

So You Have Low T… Now What?

While testosterone replacement therapy can work, most people are not willing to sacrifice so much time and money; therefore, testosterone booster supplements can come in handy. These supplements promise higher testosterone levels within a short period of time.

Testing has shown that over 50% of people taking testosterone boosters have seen marked improvement in their testosterone levels. Most men nowadays prefer using these supplements, as they are cheap and easy to use while also being very effective.

Do Testosterone Boosters Really Work?

Doctors will often prescribe hormone replacement medications, which come in the form of shots, gels, or patches that must be worn on the skin. These treatments boost testosterone levels in men, however, there are many possible testosterone side effects.

Some of these side effects include possible prostate cancer, shrinkage of the testicles, headaches, vomiting, hair loss, etc. Many men prefer to forego prescription treatments and will often opt for natural treatments instead.

What are the Benefits?

There are many benefits of natural testosterone supplements to boost testosterone.

Some of the benefits are:

  • Boosted sex drive — this is one of the most disturbing symptoms of Low “T,” because most men are proud of their ability to perform in the bedroom. Natural testosterone-boosting supplements can help a man to feel like his old self again, especially when it comes to his sexual appetite and ability to obtain and maintain an erection.
  • Increased muscle mass — no man wants diminishing muscles, but supplements to increase the production of testosterone can reverse this problem, enabling men to easily build muscle like they did in their younger days.
  • Increased energy — it can be extremely difficult to keep up with the demands of a family as well as work if a man feels as if his energy levels are non-existent. This is one symptom of Low “T” that reverses quickly.
  • Reversal of insomnia — this is another symptom that quickly improves with natural testosterone-boosting supplements.
  • Improved depression — even when anti-depressants fail to improve depression, natural supplements to boost testosterone can improve it in a short period of time.

Do Testosterone Supplements Really Work?Do They Work?

Many men are skeptical of testosterone supplementation and their ability to provide effective results. Some men wonder what testosterone supplements do. They are leery of spending their money on products that claim to work, yet fail to deliver. Fortunately, many natural testosterone supplements do, in fact, work.

One thing that man men that opt for supplements over prescription testosterone especially appreciate is the fact that supplements work without the necessity to deal with potentially harmful side effects. However, it is VERY important to choose the RIGHT supplement in order to achieve the desired benefits.

BONUS: Try These Foods That Increase Testosterone

Eat the foods that increase testosterone levelsAs we discussed earlier, as men grow older their testosterone levels start to drop, and this affects all things from muscle mass to how they perform in bed. Most men who are looking for a testosterone boost usually turn to supplements and there are many in the market that work quite well.

That being said, eating right could also give you the extra testosterone that you need and leave you even healthier than before. It is important to consider incorporating foods that increase testosterone as an additional way to increase the hormone as this will work in conjunction with natural testosterone boosting supplements.

So what should you be eating? The secret is to load up on foods that contain Vitamin D. This is a vitamin that is vital not just for healthy bones but also for testosterone production.

A study in Europe found that men who had low testosterone levels all shared one thing in common… they were lacking in Vitamin D. As soon as it was introduced into their diets in the form of food and supplements things started to improve.

9 Foods That Increase Testosterone Levels


This fish is not just full of Vitamin D, but it is also low in calories and great for heart health. You can eat it fresh or canned, as it doesn’t really make a difference. A single serving will fulfill your Vitamin D requirements for a day. Don’t like the taste of tuna? Don’t worry you can eat salmon or sardines, they have the same high levels of Vitamin D and other vital nutrients that keep you healthy.


Remember when eggs were bad for you? It turns out the science behind that argument was actually what was bad for you. The tests that they conducted were done on mice and as it turns out, eggs are great sources of not just full of Vitamin D, they are also loaded with other nutrients, such as lean protein for building quality muscle.


You may have heard that oysters are an aphrodisiac and there is some truth to that. Though they are not full of Vitamin D, instead, they are high in zinc which is good for increasing the production of testosterone. Check your current diet to see if you may be suffering a zinc deficiency. Load up with foods that contain zinc the next time you go shopping. Most shellfish are a tremendous source.

Grass Fed Beef

The current science is showing us that eating moderate amounts of beef is actually good for you, not bad as previously thought. If you have been holding out on the beef because you thought it is unhealthy it is time to let go of your fear. One serving of beef a day will give your testosterone levels the boost that is needed. We suggest a quality organic or grass fed beef to minimize the chemicals.


Beans are great for men who are looking to increase their testosterone levels because they are rich in both Vitamin D and zinc. If you are wondering which kinds of beans, you should know that almost all kinds benefit you. The reason why many men wont eat beans is how long it takes to prepare them. If this is the case for you then all you need to do is invest in a pressure cooker and your beans will be ready in just a few minutes.

Citrus Fruits

Citrus fruits are loaded with Vitamin C that reduces cortisol, the stress hormone. They also contain Vitamin A that is required for testosterone production. The great thing about them is that they are available most of the year so you can get a load of them any time you want.


This is one of the most powerful ways of boosting testosterone production. In fact, experts say that even smelling celery can increase it significantly. This is because it contains apigening which helps produce testosterone. The best way to eat celery is as a snack in between workouts.


Note that this should be butter only from grass fed cows. Butter is great for you because it contains Vitamins A, C and D that are all vital for testosterone production. The reason why they insist on grass fed is because cows that are not left to graze naturally produce milk that doesn’t contain high amounts of these vitamins. It should also be noted that butter is a healthier option than margarine.


Vitamins A, B, C, D, E, K, omega-3s, potassium, folic acid, and healthy cholesterol are all found in a single avocado and are good not just for testosterone reasons but for a variety of health reasons. If you want to have great nails and nicer hair, for instance, eat an avocado a day and see the difference. Don’t worry about the fat because this is the friendly fat that your body needs.

Your supplements are all well and good and will dramatically increase testosterone but why not expedite the process by eating all-natural testosterone boosting foods?

Closing Thoughts

When using a testosterone booster, always make sure to follow the instructions on the bottle, and never exceed the recommended dosage. The label will always tell you how much to take, so make sure to read the label before you take anything.

It’s also always a good idea to consult with your primary care physician before starting a testosterone booster.

Note that it’s very important to maintain a healthy diet and exercise on a regular basis in order to experience results when using a testosterone booster.

Last but not least, don’t forget how important it is to choose a high quality, top of the line testosterone booster, or you might end up wasting your money on an inferior supplement.


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Joe Costello
Nutrition & Wellness Consultant
Joe Costello is a Nutrition & Wellness Consultant, certified by the American Fitness Professionals & Associates (AFPA), author, and internet blogger. Joe has more than 9 years of experience in the sports nutrition industry and over 3 years of experience as a supplement and nutrition blogger. As a certified NWC who specializes in dietary supplements, Joe strives to deliver accurate, comprehensive, and research-backed information to his readers. You can find more of Joe’s work including his E-Books about fitness and nutrition at his official website, or connect with him on LinkedIn, Facebook, Instagram, Vimeo, or YouTube. Joe Costello is one of the founders of and years after the creation of the site, partnered with TEK Naturals, a nutritional supplement company.