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Exciting Clinical Studies and Reviews for Serious Bodybuilders & Athletes

GenF20 Plus is formulated with 16 ingredients shown to help boost HGH production as well as increase muscle strength, growth and recovery.

Below you’ll read a handful of clinical studies and reviews on ingredients such as: GABA, Deer Velvet Antler, Tribulus Terrestris and specific amino acids like L-Ornithine, L-Arginine and L-Lysine.

First, let’s start by reading this incredible review from Dr. Steven Lamm MD*:

Throughout my career as a doctor, researcher and author, I am constantly investigating new solutions and supplements that I can share with my patients to help them improve the quality of their life as they age, and that is why I want to introduce you to GenF20 Plus® a powerful, all-natural human growth hormone releaser.
You see as people age, your production and supply of this very important hormone, called the human growth hormone, dramatically drops off, resulting in a decrease in muscle mass, increase in belly fat, saggy skin and wrinkles, along with many other unpleasant side effects associated with aging.That is why GenF20 Plus® is such a powerful solution to combat the inevitable aging process. It was formulated to help stimulate your body to produce its own human growth hormone to help return your HGH levels to what they were at their peak.
As a doctor, I am very critical of many of the natural anti-aging products available today. But I would wholeheartedly recommend GenF20 Plus® to anyone who wants to naturally increase their HGH levels and improve their overall health as they age.

*The recommendation from Dr. Steven Lamm refers to the entire GenF20 Plus System, both Tablets and Oral Spray.

But Dr. Lamm isn’t the only health expert raving about GenF20 Plus…

Listen to what these health specialists have to say:


GenF20 Plus [is] a 100% natural supplement, backed by real clinical results.

-Anna Lepeley (PhD, CSCS, CISSN)


I was recently introduced to your product GenF20 and have seen great results with my patients using it. I am often asked for nutritional product recommendations and highly recommend this product to my patients/athletes. This product is beneficial for both athletes and patients undergoing rehab to enhance their full rehab potential.

-Dr. Jeff Hill (DPT, MA, CSCS)

GenF20 Plus Increases IGF-1 Levels By 28% In Just 84 Days!*

We dumped a ton of money into having a private lab test GenF20 Plus.

And we specifically asked researchers to measure the levels of IGF-1.


Because HGH is extremely tricky to detect and measure. That’s why so many athletes dope with synthetic HGH and get away with it.

But IGF-1 is like an HGH production “marker.” That’s because when your pituitary gland releases HGH, one place it travels is your liver, where it’s converted into IGF-1.

So when you see IGF-1 levels increase, it’s a sign HGH levels increased as well.

And, it’s through IGF-1 that HGH delivers many of its muscle building benefits.

Here’s how the study went down:

This was a randomized, double-blind, placebo controlled clinical study. The “gold” standard of medical research.

There were 61 participants who were randomized using a sophisticated computer software to ensure there was no bias.

The group was split where 31 participants received the real GenF20 Plus formula and 30 received a placebo.

The study lasted 84 days.

At the end, the researchers measured the results and here’s what they found:

In just 84 days, men age 40 or above receiving GenF20 Plus increased IGF-1 levels by a staggering 28%!

Isn’t that amazing?

You should also know IGF-1 plays a key role in protein synthesis which is critical for building HUGE muscles fast!

GABA Elevates HGH by 400% On “Rest Days” & 200% During Intense Exercise !

Studies show growth hormones secrete from the pituitary gland during intense exercise.

One way you can improve your workout output is by increasing HGH secretion while exercising. When your GH levels are higher you may notice more energy and strength at the gym.

But what about HGH secretion while you’re recovering?

If you’re taking a rest day, increasing your levels of HGH would be ideal for a faster recovery. But unfortunately, HGH is released in spurts and typically decreases as the day drags on.

So how can you improve your GH secretion during working out AND during your rest days?

Well it just so happens that the Division of Athletic Training of Shenandoah University in Winchester Virginia performed a clinical study to find out.

They gave eleven resistance trained men, between the ages of 18 and 30, an oral supplement of either 3 grams GABA or a placebo.

Half of the guys hit the gym and performed an intense workout. That’s because the researchers wanted to find out if GABA could increase growth hormone secretion during exercise.

The other group of guys didn’t do anything.
They rested.

During the training and the resting, researchers took measurements at seven different times to track any significant changes. They were specifically measuring irGH (immunoreactive growth hormone) and ifGH (immunofunctional growth hormone)

The results were staggering…

The researchers found those given GABA saw growth hormone levels peak by about 400% while they were resting!

Can you imagine how much faster your muscles would recover with 400% more HGH on your rest days?

But the results get even better because the researchers made another exciting discovery…

They found those given GABA saw their growth hormone levels elevated by 200% while exercising!

A 200% burst of HGH during exercise is every bodybuilders fantasy. The pure steel-bending strength. The insane pumps. And the hard-hitting reps for maximum muscle growth.

Deer Velvet Antler is an All-Natural, 100% “Legal” Source of IGF-1


Research shows Deer Velvet Antler contains IGF-1 (insulin-like growth factor-1).

IGF-1 is a banned substance on the World Anti-Doping Agency Prohibited List.

But many athletes still use IGF-1 illegally because it’s known to help repair cartilage, tendons and joints. Especially after grueling workouts and long games.

One way to experience these recovery-accelerating benefits of IGF-1 for yourself, 100% legally, would be to supplement with Deer Velvet Antler.

With GenF20 Plus you get a daily dose of Deer Velvet Antler.

Cox HD, Eichner D. Detection of human insulin-like growth factor-1 in deer antler velvet supplements. Rapid Commun Mass Spectrom. 2013 Oct 15;27(19):2170-8. doi: 10.1002/rcm.6678. PMID: 23996390.


Arginine, Lysine and Ornithine Stimulate Growth Hormone Production!

Just take a look at this groundbreaking research:

“Specific amino acids, such as arginine, lysine and ornithine, can stimulate growth hormone (GH) release when infused intravenously or administered orally.”

This is from a study released by Mississippi State University.

All 3 of these specific amino acids are in the GenF20 Plus formula.

Volume 18, Issues 7–8, July–August 2002, Pages 657-661
Department of Health, Physical Education, Recreation and Sport, Mississippi State University, Mississippi State, Mississippi, USA
Rexall Sundown, Boca Raton, Florida, USA

Ornithine Increases the Release of Growth Hormone In Bodybuilders

Twelve bodybuilders preparing for a competition volunteered for this study.

They were given L-Ornithine Hydrochloride orally after an overnight fast for three Saturdays in a row.

Blood samples were taken before administration and also 45 minutes and 90 minutes after.

Regardless of dosage (40, 100 or 175mg), L-Ornithine levels were significantly higher in each participant’s samples.

Results also showed an increase of growth hormone levels.

This is just one exciting example demonstrating the HGH-boosting potential of L-Ornithine in competition bodybuilders.

With GenF20 Plus you get a daily serving of L-Ornithine.

Nutrition Research, Volume 10, Issue 3, March 1990, Pages 239-24. Biotics Research Corporation University of Texas Health Science Center University of Houston Houston, Texas USA


Seventeen Weight-Lifters & Bodybuilders Boost HGH + IGF-1 with L-Ornithine and L-Arginine Combo

Seventeen strength trained athletes were randomly given either a placebo or an L-Ornithine + L-Arginine combo.

The amounts were 3,000 mg of arginine and 2,200 mg of ornithine, twice daily, for a total of 3 weeks.

Data was collected 2 minutes after heavy resistance training. And then again 1 hour later.

The results were published in the Journal of Strength and Conditioning Research.

Here’s a quote from the study, speaking on the results of the athletes given the L-Ornithine + L-Arginine combo:

genf40 small

“Both growth hormone and insulin-like growth factor-1 serum levels were significantly increased”

This study shows that with a high dosage of L-Arginine and L-Ornithine you could expect an increase of HGH and IGF-1 after heavy resistance training.

To be clear, GenF20 Plus doesn’t contain as much L-Ornithine and L-Arginine as in this study. But this HGH + IGF-1 boosting combination is a cornerstone in our one-of-a-kind HGH-releasing formula.

Journal of Strength and Conditioning Research: April 2010 – Volume 24 – Issue 4 – p 1082-1090 doi: 10.1519/JSC.0b013e3181d321ff

L-Lysine + L-Arginine Combo Elevates HGH in 60 Minutes…While Resting!!!

A unique study was performed to measure the effects L-Lysine and L-Arginine had on HGH levels while resting.

Here’s how it went…

Researchers divided participants into two groups.

One group received a placebo and the other group received a combination of both L-Arginine and L-Lysine.

Growth Hormone levels were measured 60 minutes after ingestion.

The results were published in the International Journal of Sport Nutrition.

“[GH] was significantly elevated during resting conditions 60 min after amino acid ingestion compared with the placebo trial.”

Increasing your HGH levels while resting has monstrous potential to aid rapid recovery for growing bigger muscles faster.

With the GenF20 Plus all-natural HGH-releasing formula you get a daily dose of L-Lysine and L-Arginine to help aid your muscle recovery and growth.

Suminski RR, Robertson RJ, Goss FL, Arslanian S, Kang J, DaSilva S, Utter AC, Metz KF. Acute effect of amino acid ingestion and resistance exercise on plasma growth hormone concentration in young men. Int J Sport Nutr. 1997 Mar;7(1):48-60. doi: 10.1123/ijsn.7.1.48. PMID: 9063764.


Tribulus Terrestris Alleviates Muscle Damage And Promotes Anaerobic Performance

Being a trained boxer takes guts and hard work.

Strength training and sparring can put a beating on your body. And in a study published in the Journal of Sport and Health Science researchers investigated the effects of Tribulus Terrestris with fifteen male boxers.

These boxers were divided up and underwent a series of intense training and rest periods.

The results were quite remarkable for any serious athlete, regardless if you box or not.

What these researchers found was the boxers given 1250 mg of Tribulus Terrestris saw a significant alleviation of muscle damage and promotions of anaerobic performance.

The researchers believe it works by decreasing the plasma IGFBP-3.

That’s why we formulated GenF20 Plus with high-quality Tribulus Terrestris.

J Sport Health Sci. 2017 Dec; 6(4): 474–481.
Published online 2015 Dec 14. doi: 10.1016/j.jshs.2015.12.003
PMCID: PMC6189260
PMID: 30356644