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I Tested 5 GNC Testosterone Boosters That Actually Work (2023)

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I’ve tested the best GNC testosterone boosters of 2023. It is time to see some serious results with these t-boosters.
best gnc testosterone booster

This article was fact checked by Sean Russell - Bachelors in Science

Best For Bedroom


The best ingredients for boosting you testosterone levels

Best Muscle Builder



Awesome pump that can get you some serious gym results

Best Anti-Aging Solution

Prime Male

Prime Male

If you are in your 40s, this one is for you.

Best Metabolism Booster



The best testosterone booster ood for weightloss

Read Review >

Best Overall



If you are looking for something that performs well on every aspect




Hours of Research.







  • 100% Natural Ingredients
  • Aids in Weight Loss
  • Your best friend for building muscle

My Personal TestoGen Summary:

In my journey to find the best GNC testosterone booster, it felt like I’d become best pals with the supplement aisle at the store! 😂 

But my pick has to be TestoGen. It is made of extremely high-quality ingredients and actually lives up to its promise. Whether it’s muscle growth, endurance, or even a little extra spark in the bedroom (wink, wink 😉). 

Seriously, though, its all-natural ingredients give you a safe, effective boost without the need for a prescription.


Let’s dive into a game-changer, a little secret that can rev up your fitness journey or just bring back that youthful vigor. 

You guessed it, we’re zooming in on the best GNC testosterone boosters! It’s not just about muscles; it’s about a better, stronger, more energetic you.

So buckle up, folks! We’re about to unveil the very best testosterone boosters that GNC has to offer. 🚀

Top things I look for when reviewing a testosterone booster

IngredientsNatural and clean ingredients
Scientific evidenceScience and research that it actually works
Customer ReviewsPositive experiences from real people
SafetySafe to use

What’s The Best GNC Testosterone Booster?

multiple testosterone boosters

My Top Rankings

RatingPersonal Verdict
TestoGen5.0/5.0Best For Bedroom
TestoFuel4.9/5.0Best Muscle Builder
Prime Male4.8/5.0Best Anti-Aging Solution
TestoFierce4.6/5.0Best Metabolism Booster
TestoPrime4.5/5.0Best Overall Performance

#1 TestoGen – Best for Bedroom

Overall Rating
Scientific evidence5.0/5.0
Customer reviews4.9/5.0


TestoGen contains some of the best ingredients known for boosting testosterone levels. We’re talking D-aspartic acid, fenugreek, and boron. It’s like the Avengers team for your testosterone levels. 

Just a note from the academic nerds: studies have found that fenugreek significantly raises testosterone levels (1), while D-aspartic acid led to a 42% increase in testosterone in one study (2).

Scientific evidence 

But don’t just take my word for it; the science backs me up! TestoGen boosts luteinizing hormone production, leading to an increase in testosterone levels (3). Who needs a coffee boost when you’ve got health supplements like TestoGen? 😎

Amazing increase in energy levels and stamina with Testogen! I felt the difference in just a week.
The Real Bradly_9000

Customer reviews 

And we aren’t the only ones loving this stuff. Customers are raving about it online, with guys reporting more energy, better workouts, weight loss, and faster recovery times. A few even mentioned an improvement in their love lives. So if you want to be a rockstar in the gym AND in the bedroom, this one is for you, casanova. 😉


Let’s not forget safety. With TestoGen, you’re not taking some untested experimental concoction; it’s all based on well-researched, natural ingredients (4). So you can rest easy knowing that you’re safely boosting your testosterone levels. 

Just remember to always consult your doctor if you have any medical conditions.

infographic of testogen supplement facts

Key Ingredients

  • D-Aspartic acid
  • Korean Ginseng extract
  • Fenugreek extract
  • Boron
  • Vitamin D
  • Nettle leaf extract
  • Zinc
  • Magnesium
  • Vitamin B6
I Tested 5 GNC Testosterone Boosters That Actually Work (2023) 1

My Personal take

I’ve got to say that TestoGen is definitely a game-changer. It offers a natural way to boost testosterone, and the all-star ingredient lineup really gives you the best bang for your buck. 

Plus, I really love the idea of building muscles, losing weight, and maintaining a healthy lifestyle with just one supplement.


  • All-natural ingredients
  • Increases muscle strength and endurance
  • Enhances sexual performance
  • 100-day money-back guarantee


  • A bit on the pricey side
  • Sold exclusively through their official website

Bottom Line

All in all, TestoGen comes out on top as my pick for the best GNC testosterone booster. It’s a trusty sidekick for your own health and fitness journey, helping with everything from muscle growth and weight loss to energy levels and even your sexual drive. 

Whether you’re a seasoned athlete looking for some diet pills or just a guy wanting to boost your testosterone levels naturally, I wholeheartedly recommend giving TestoGen a shot! 🎯

And if you don’t like it, there’s always that 100-day money-back guarantee. But something tells me you’re going to love it just as much as I do.

What Customers are Saying…

  • No more fatigue or foggy brains. Testogen is a game-changer for me!
  • Testogen took my workout game to a new level. It’s also a good appetite suppressant
  • Not a huge difference after a month of usage. Maybe it’s just me?
  • Works well but could be more affordable.

#2 TestoFuel – Best Muscle Builder

Overall Rating
Scientific evidence5.0/5.0
Customer Reviews4.7/5.0


TestoFuel is like the ‘Michelin Star’ of diet pills. It comes packed with the classic Zinc, D-Aspartic Acid, and Vitamin D3 that you’d expect from any self-respecting testosterone booster.

But wait, it gets better.

It also uses Oyster Extract, which is not just tasty but a super source of zinc. This is all according to a study by the National Institutes of Health (5).

Scientific evidence 

Science and testosterone are pretty much BFFs. There’s this study published in Biological Trace Element Research that shows that oyster extract has amazing potential for boosting testosterone levels (6). 

So, you get to burn fat, lose weight, and build muscles all at the same time. It’s like killing two (or three) birds with one stone, but in a nice, healthy way. 

Feeling youthful and active with Testofuel. Best decision ever!
Verified Customer

Customer reviews 

On the feedback front, users seem to love TestoFuel. Most customer reviews say it helps with healthy weight management and appetite control.

Oh, and one guy even claimed it gave him the energy of a teenage kangaroo.🦘


Now, you’re probably wondering about the safety of this “dietary supplement”. Well, there is nothing to worry about. TestoFuel is as safe as testosterone supplements can get. According to a study that appeared in the Journal of the International Society of Sports Nutrition (7), it is entirely natural and contains no harmful steroids.

testofuel supplement facts

Key Ingredients

  • D-Aspartic Acid
  • Fenugreek
  • Vitamin D
  • Magnesium
  • Oyster Extract
  • Vitamin K2
  • Ginseng
  • Zinc
  • Maca
  • Boron
Testofuel review picture

My Personal take

Honestly, I think TestoFuel is pretty amazing. I mean, it’s got all the good stuff, minus the harmful steroids, plus a good reputation for helping with calorie burning and weight loss.

And let’s not forget that it’s the best GNC testosterone booster, according to dozens of users. Need I say more?


  • Natural ingredients
  • High-quality formula
  • A proven dietary supplement to support weight loss and muscle growth
  • Kangaroo-like energy 🦘


  • Only available on their official website
  • It may take a bit of time to see results

Bottom Line

If you’re looking for a dietary supplement that’s safe, natural, and can help with weight loss and muscle growth, then TestoFuel is a great choice. 

Plus, it has the added bonus of boosting your testosterone levels and giving you the energy of a sprightly kangaroo. 👍

What Customers are Saying…

  • I take this testosterone supplement every morning. It gives me the energy of a kangaroo, ready to jumpstart the day.
  • Caused a minor skin rash. Check the ingredients before you use them!

#3 Prime Male – Best Anti-Aging Solution

Overall Rating
Scientific Evidence4.9/5.0
Customer Reviews4.5/5.0


Prime Male’s ingredient list reads like the menu at an upscale health food restaurant. One serving dishes up an impressive blend of D-Aspartic Acid, BioPerine®, Boron, Korean Red Ginseng, Luteolin, Magnesium, Nettle Root, Vitamin B6, Vitamin D3, Vitamin K2, and Zinc. 

It’s a mouthful, I know, but each ingredient plays its part.

According to a study in Reproductive Biology and Endocrinology, D-Aspartic Acid can increase testosterone levels in both humans and rats (8). 

A spoonful of BioPerine® helps your body absorb these nutrients, and a dash of Boron can lower estrogen levels in men, increasing the total testosterone level. (9)

Scientific evidence 

On the science front, Prime Male holds its own. Take that Boron I mentioned earlier. A study published in the Journal of Trace Elements in Medicine and Biology found that a small daily dose of boron increased free testosterone levels in participants (10). 

Then there’s Korean Red Ginseng, which a study in the Asian Journal of Andrology found improved erectile function 🔬(11).

Prime Male revived my youthful energy. I couldn’t be happier!
Adam K.

Customer reviews 

I’ve taken a deep dive into the reviews, and guys, they’re overwhelmingly positive. Customers rave about increased energy levels, enhanced mental focus, and a significant mood boost. 

The folks over 40 can’t stop gushing about how Prime Male has given them a second wind and works like a “magic” fat burner.


Prime Male seems to have a pretty clean safety record. It’s got all-natural ingredients, and no significant side effects have been reported. 

However, like with any dietary supplement, you should have a chat with your physician prior to use, especially if you have underlying health conditions. Safety first, right?

infographic with the prime male ingredients

Key ingredients

  • Ashwagandha
  • Nettle Root
  • D-aspartic acid
  • Magnesium
  • Luteolin
My Prime male testosterone booster

My Personal take

Now let’s get personal. Why do I like Prime Male? Well, it’s simple. This testosterone supplement provides a well-rounded approach to boosting testosterone levels, not just for those seeking to build muscle, or burn fat, but for all men who want to lead a healthy lifestyle. 

Plus, it’s hard to argue with all those satisfied customers. 👍


  • Packed with scientifically-backed ingredients
  • Positive customer reviews, particularly from the 40+ crowd
  • Can boost energy, mood, and mental focus


  • It’s on the pricier side
  • Requires four doses a day for the best results

Bottom Line

Prime Male is an impressive player in the testosterone-boosting field. From its carefully chosen ingredients to its wealth of positive reviews, it’s a strong choice for any man looking to regain his youthful energy. 

The price and dosing frequency may be drawbacks for some, but in my book, the benefits outweigh the cons. After all, can you really put a price on feeling your best?

What Customers are Saying…

  • Lol, I don’t know who loves Prim Male more. Me or my wife. A real game-changer in the bedroom!
  • Feeling fit and vibrant in my 40s, thanks to Prime Male.
  • Prime Male works, but it’s a bit expensive for my pocket.

#4 TestoFierce – Best Metabolism Booster

Overall Rating
Scientific Evidence4.4/5.0
Customer Reviews4.3/5.0


Just like that time I tried to build a spice rack without a manual, I know that you can’t put together an effective testosterone booster without the right ingredients. 

The creators of TestoFierce clearly agree, as they’ve crammed this bad boy full of potent stuff. It’s got a hefty dose of D-aspartic acid, which is shown to significantly increase testosterone levels (2). 

Add a sprinkle of Fenugreek and Ginseng, two plants known for their health benefits, and you’re onto a winner. 

And just like the cherry on top of my Sunday ice cream, TestoFierce also includes Zinc, a crucial mineral for testosterone production (12).

Scientific evidence 

I remember when I got my first science set as a kid, I wanted to mix everything and see what happens. Well, the science behind TestoFierce is kind of like that, but with more precision and less accidental fires 🔥. 

There’s a significant body of research backing the ingredients in this product. D-Aspartic acid, for instance, has been demonstrated to boost testosterone levels in both human and animal studies (2). Fenugreek, on the other hand, has been shown to enhance libido and improve testosterone levels (13).

What makes testofierce really stand out from the other testosterone boosters on this list is that it has black pepper fruit extract. This helps your body absorb the natural herbs more efficiently. (17)

TestoFierce is my secret weapon for those long gym sessions
Ashmeran B.

Customer reviews 

Remember that time you bought a gadget and it became your best buddy because all the other users said it was cool

The customer reviews for TestoFierce are kind of like that. The majority of users appreciate the energy and mood lift, along with improved gym performance, especially compared to the weeks prior. One user even mentioned that it felt like they had tapped into their younger selves.


Thankfully, the safety of TestoFierce isn’t something you need to worry about. All the ingredients are natural and have been used for centuries for their medicinal properties

But as I always say, make sure to have a chat with your physician prior to starting any new supplement regimen.

testofierce supplement facts

Key Ingredients

  • Ashwaganda Root Powder
  • Zinc
  • Vitamin D3
  • Asian Ginseng Powder
  • D-Aspartic-Acid (DAA)
  • Boron
  • Fenugreek Seed Powder
  • Vitamin K
  • Vitamin B6
My testofierce

My Personal take

I’ve got to say, I’m pretty impressed with TestoFierce. Just like that first bite of a well-cooked steak, it hits the spot. 👌🏻

It’s got a solid, natural ingredient list and scientific backing to boot. And those customer reviews? It’s like getting a warm hug from a friend. The recommended dose might seem a bit much, but hey, no pain, no gain, right?


  • Contains all-natural ingredients with scientifically-backed benefits.
  • Users report noticeable improvements in mood and energy levels.
  • No proprietary blends, which means you know exactly what you’re getting


  • Some people may find the recommended seven capsules daily a bit too much

Bottom Line

All things considered, Testo Fierce is like that friend who always has your back. It’s got a potent blend of natural ingredients and a strong reputation among its users.

It could be your secret weapon for boosting testosterone, enhancing workout performance, and tapping into that youthful energy we all yearn for. So, if you’re looking for an appetite suppressant and testosterone-boosting supplement that doesn’t beat around the bush, give TestoFierce a try.

What Customers are Saying…

  • Fierce is the right word, indeed
  • Noticed slight digestive discomfort with TestoFierce. It lessened over time
  • Testo Fierce works, but don’t expect overnight miracles

#5 TestoPrime – Best Overall Performance

Overall Rating
Scientific Evidence4.7/5.0
Customer Reviews4.0/5.0

TestoPrime ingredients are like the Avengers of testosterone boosters. 

It packs a punch with 12 natural powerhouses, including D-Aspartic Acid, Fenugreek, and Panax Ginseng. I mean, who wouldn’t want a bit of Ginseng, which, according to a study published in the American Journal of Clinical Nutrition, has anti-inflammatory and antioxidant benefits? (14)

Scientific evidence 

Now, I know you’re thinking, “It sounds good, but does it work?” 🤔 A study published in the Journal of Ethnopharmacology reported Fenugreek as a significant player in boosting testosterone (2). Meanwhile, D-Aspartic Acid, according to a study published in the Journal of Reproductive Biology and Endocrinology, was shown to increase testosterone levels by 42%! (8)

TestoPrime not only improved my physique but also sharpened my mind. 
Anonymous Customer

Customer reviews 

Customer reviews are like online word-of-mouth, and boy, do they have good things to say about TestoPrime! Many users reported feeling more energetic and seeing improved muscle growth and fat loss. 

I should mention, though, that results can vary, and it’s crucial to pair any supplement with a healthy diet and regular exercise. 🏋️‍♂️


TestoPrime puts safety first; it consists of all-natural ingredients. Additionally, it has green tea extract, which has been evaluated for safety as a nutritional supplement. (15)

But always consult with your physician prior to starting any dietary supplement, especially if you have pre-existing conditions. 

testoprime supplement fact

Key Ingredients

  • D-aspartic acid
  • Zinc
  • Fenugreek seed extract 
  • Panax ginseng extract
  • Green tea extract
  • Garlic extract
  • Ashwagandha root extract
  • Vitamin B5
  • Pomegranate extract 
  • Black pepper Extract
  • Vitamin B6
  • Vitamin D
testoprime pills

My Personal take

As for me? I like TestoPrime. It’s like the James Bond of testosterone boosters: smooth, efficient, and it delivers what it promises.

What I like most about TestoPrime is that it makes me feel fuller and therefore helps me lose weight. The perfect diet pills to get me closer to that killer summer body. 😎💪🏼


  • No proprietary blends
  • Doesn’t require a prescription
  • 12 powerful, natural ingredients
  • Helps with muscle growth and fat loss.


  • Can only be bought through the official website

Bottom Line

TestoPrime is a strong choice if you’re looking for a testosterone booster. It’s packed with scientifically backed ingredients, has outstanding customer reviews, and places a high priority on transparency and safety.

However, always remember that testosterone supplements should be used in conjunction with a healthy lifestyle to achieve optimal results. Keep track of your calorie intake, sip your green coffee, and before you know it, you could be on your way to becoming the next Hercules! 💪🌿

What Customers are Saying…

  • Love TestoPrime! It really helps me squeeze out those extra reps in the gym
  • I experienced a temporary flushing reaction with TestoPrime.

Does a Testosterone Booster Need to Be FDA Approved?

a scientist researching a product

Well, let me spill the beans here: the FDA doesn’t quite play the big brother role when it comes to testosterone supplements and other dietary supplements, unlike prescription medications. That’s right, testosterone boosters (or diet pills) aren’t subjected to the same stern regulations or rigorous testing. 🤷‍♂️

So, those big promises you see on the labels about boosting low testosterone levels? Not exactly FDA-approved. Instead, safety and effectiveness are gauged by individually testing each component. (16)

Take green tea extract, for instance. It’s been studied up, down, and sideways and shown to be safe in dietary supplements. Ditto for other components. But the golden rule? Always consult with your physician prior to taking any medication, especially if you’re on any other medication or have a health condition.

Safety first, pals! 🙌

Is testosterone from GNC safe?

The GNC isn’t just some random corner store selling testosterone boosters. They’re a reputable retailer with a pretty strict vetting process. Their shelves aren’t going to host any product that hasn’t gone through a stern quality check. 

So, for the most part, testosterone supplements from GNC are considered safe. But again, remember my mantra: individual results may vary! 🎲

However, it doesn’t mean you should start popping these pills like candy. While they are safe, they can interact with other medications and pre-existing conditions.

How long does it take for GNC testosterone to work?

Guy impatiently waiting

You know what they say—good things take time! And it’s no different with testosterone boosters from GNC. While it would be awesome to wake up the next day with muscles bulging from everywhere, reality has a different script. 

Most users start seeing some changes in energy levels and mood in the first few weeks, but for physical changes like increased muscle mass and weight loss, it might take a couple of months. 

Keep up your healthy diet and regular exercise, and let the supplement be a sidekick in your quest for a fitter body, not the hero. After all, there’s no magic weight loss pill—if only, right? 

The Ultimate GNC Testo-Booster Shopping Checklist

I Tested 5 GNC Testosterone Boosters That Actually Work (2023) 2

Okay, so you’re ready to embark on your testosterone-boosting journey. Good on you! 💪 But before you dive in headfirst, let’s make sure you’re fully equipped for this adventure. Like any expedition, you need a solid guide. Allow me to be your tour guide on this voyage to a healthier, more vital you. Ready? Set? Let’s go! 🚀


Would you buy a used car without peeking under the hood? No, right? It’s the same principle when it comes to testosterone boosters. You need to know what’s in that bottle! Ingredients play a vital role in the effectiveness of the product.

Look for natural, scientifically backed ingredients like green coffee bean extract and others that have proven benefits for boosting testosterone. Let’s face it, you don’t want to be ingesting anything that’s a mystery! 🔍

Scientific Evidence

Think of scientific evidence as the backing band for your lead singer (the ingredients, in this case). You need to see if there’s a real, scientific basis for the claims these products make. Look for studies that support the effectiveness of ingredients. If they don’t have any, they might just be placebos, and we don’t want that. 🥼🧪

Customer Reviews

It’s always handy to learn from other people’s experiences, don’t you think? Customer reviews are like borrowing a friend’s notes before a big test. They can tell you a lot about a product’s effectiveness, safety, and potential side effects. And remember, these are real people who’ve used the product, so it’s as close as you can get to trying before you buy! 🗣️💬


Last but certainly not least, we need to talk safety, my friends. While these boosters are generally safe, you want to check for potential interactions with any medications you’re taking or a pre-existing medical condition. Check for any potential temporary flushing reactions, and make sure they are gluten-free if you have a gluten intolerance. The goal is to boost your health, not risk it! 🛡️🩺

What Is The Difference Between Testosterone and Steroids?

a man thinking

Ah, testosterone and steroids – two terms that often get thrown around together, but they’re not exactly the same. Let’s break it down for you, plain and simple:

💪 Composition: Testosterone is the real deal, a natural hormone produced in your body, specifically in the testicles. Steroids, on the other hand, are synthetic substances designed to mimic testosterone’s effects.

🏥 Medical Use: Testosterone is used by doctors to treat medical conditions like low testosterone levels (hypogonadism). Steroids, known as anabolic-androgenic steroids (AAS), are prescribed in cases of hormone deficiencies and certain muscle-wasting diseases.

💥 Performance Enhancement: Testosterone can be used in a regulated manner to enhance muscle mass and strength. It’s typically done under medical supervision and within recommended dosages. Steroids, on the flip side, can be abused for muscle gain, athletic performance enhancement, and bodybuilding purposes, often taken in higher doses than medically advised.

⚠️ Side Effects: Testosterone therapy, when properly managed, tends to have minimal side effects. Steroid abuse, on the other hand, can lead to serious health risks like liver damage, cardiovascular issues, hormonal imbalances, and even take a toll on your mental well-being.

Here’s a handy table summarizing the key differences between testosterone and steroids:

Natural hormoneSynthetic substances
Used for medicalPrescribed for hormone
struggles to gain weightUsed for deficiencies and muscle
Specifically to boost T-levelsUsed for wasting diseases
Regulated usagePotential for abuse
Minimal side effectsSerious health risks

My Final $0.02

We’ve revved up your knowledge, fueled your fitness journey, and revealed the potent tools in GNC’s testosterone booster arsenal. Now it’s over to you! ⚡

Remember, these supplements aren’t magic potions, but they are mighty allies in your quest for a stronger, healthier, more vivacious you. With that said, if you still unsure which ones to choose, you can’t go wrong with TestoFuel or TestoGen, my personal favorites. 👇🏼


Testosterone can contribute to muscle growth and increased strength, which may lead to a more muscular appearance.

Yes, testosterone boosters can be effective in naturally increasing testosterone levels and providing benefits such as improved energy, muscle growth, and enhanced libido. However, results may vary.

For individuals with low testosterone levels, testosterone boosters can be beneficial in restoring hormone balance and improving overall well-being. It’s important to choose reputable brands and consult with a healthcare professional for personalized advice.

A healthcare professional should keep an eye on testosterone replacement therapy. Long-term use of testosterone should be discussed with your doctor to assess the potential benefits and risks based on your individual needs and medical history.


  1. Ro Health Guide. (2021). Fenugreek and testosterone: Can it boost your levels?
  2. Healthline. (2021). D-Aspartic Acid and Testosterone: Does It Work?
  3. National Center for Biotechnology Information. (2019). 
  4. Healthline. (2021). Testogen: Does It Really Work?
  5. PubMed. (2004). Testosterone and Aging: Clinical Research Directions.
  6. National Center for Biotechnology Information. (2019). Testosterone. 
  7. Journal of the International Society of Sports Nutrition. (2014). The effects of a commercially available botanical supplement on strength, body composition, power output, and hormonal profiles in resistance-trained males.
  8. National Center for Biotechnology Information. (2017). The Effects of Fenugreek on Men’s Health: A Comprehensive Review of the Literature.
  9. MDPI. (2021). The Effects of Ashwagandha (Withania somnifera) on Physical Performance: A Systematic Review.
  10. ScienceDirect. (1996). Ginseng and male reproductive function. 
  11. Ro Health Guide. (2021). Ginseng and Erectile Dysfunction: Does It Work?
  12. PubMed. (1996). Yohimbine in erectile dysfunction: the facts.
  13. Examine.com. (2021). Fenugreek health benefits, dosage, safety, side effects, and more
  14. National Center for Biotechnology Information. (2013). Fenugreek: A review on its nutraceutical properties and utilization in various food products. 
  15. Oxford Academic. (2020). A Systematic Review of the Effect of Nutritional Supplements on Testosterone Levels in Healthy Men. 
  16. U.S. Food and Drug Administration. (2021). Testosterone Information.
  17. National Center for Biotechnology Information. (2016). Quantum Chemical and Docking Insights into Bioavailability Enhancement of Piperine and Piperlongumine in Piper Species
Table of Contents


Ingredients (5.0)
Science (5.0)
Reviews (4.9)
Safety (5.0)