Human Growth Hormone (HGH) plays a crucial role in growth, cell repair, and metabolism, making it a key hormone for overall health and vitality. For those looking to naturally boost their HGH levels, the amino acids L-arginine, L-ornithine, and L-lysine offer a promising solution.

These amino acids, either individually or in combination, have been shown to stimulate the release of HGH, offering benefits such as enhanced muscle growth, improved recovery, and overall well-being.

Understanding how these amino acids work to increase HGH levels can help in effectively utilizing them for health and fitness goals.

Mechanisms for Increasing Human Growth Hormone Levels

  1. Stimulation of Pituitary Somatotropin: The combination of L-arginine and L-lysine works like a team to kickstart the release of pituitary somatotropin, a hormone that ramps up HGH levels.

This effect is particularly beneficial for bodybuilders and those in anti-aging programs, as increased HGH can lead to more muscle mass, better recovery from workouts, and a youthful appearance. The synergistic action of these amino acids on the pituitary gland means they’re more effective together than alone [Isidori, Lo Monaco, & Cappa, 1981]. [1]

  1. Ornithine and Arginine After Exercise: For athletes and fitness enthusiasts, taking arginine and ornithine after intense workouts can be a game-changer. This combination boosts growth hormone and IGF-1 levels post-exercise, aiding in muscle recovery and growth. [2]

It’s like giving your muscles the perfect building blocks they need to repair and grow stronger after a heavy workout session [Zając et al., 2010].

  1. Gene Expression Stimulation by Arginine: Arginine goes beyond just triggering hormone release; it also stimulates the genes responsible for growth hormone production. This means that arginine can help your body produce more HGH from within, enhancing its natural ability to support muscle growth, speed up recovery, and fight the signs of aging.

It’s like tuning your body’s engine to produce more of what it needs to stay strong and youthful [Adrião et al., 2004]. [3]

Clinical Evidence and Limitations

  1. Varied Results in Studies: The journey to increase HGH levels using amino acids like L-arginine, L-ornithine, and L-lysine isn’t always straightforward. Some studies have shown promising results, suggesting these supplements can boost HGH levels, which is great news for bodybuilders and those seeking anti-aging benefits.

However, other studies, like the one by Fogelholm et al. in 1993, found that low doses of these amino acids didn’t really change HGH or insulin levels in athletes. This means that while there’s potential, the effectiveness might depend on how much you take and your body’s unique response. [4]

  1. Potential Therapeutic Effects with GHRH: When L-arginine is paired with growth hormone-releasing hormone (GHRH), it seems to work wonders, especially for people with growth hormone deficiencies. This combination can significantly boost HGH levels, offering hope for therapeutic use.

For those in bodybuilding or anti-aging programs, this finding suggests that combining L-arginine with other substances that stimulate HGH release could be more effective than using L-arginine alone [Goli et al., 2022]. [5]

  1. Inconsistency in Effects: The road to increased HGH levels using these supplements can be a bit bumpy. Their effectiveness varies widely, influenced by factors like how much you take (dosage), your body’s unique chemistry (individual response), and the mix of amino acids you use. [6]

This means that what works for one person might not work for another, and finding the right combination and dosage can be a process of trial and error [Chromiak & Antonio, 2002].

How to increase efficiency of amino acids by adding anti-somatostatin ingredients like choline?

To increase the efficiency of amino acids in boosting growth hormone levels, adding anti-somatostatin ingredients like choline can be effective. Choline enhances growth hormone secretion by inhibiting somatostatin, a hormone that normally suppresses growth hormone release, thereby amplifying the amino acids’ HGH-stimulating effects.

Choline and Growth Hormone Secretion

Choline, a nutrient we often hear about for its brain health benefits, also plays a fascinating role in growth hormone secretion. Research has shown that choline can boost the secretion of growth hormone, especially when combined with specific agents like apomorphine HCl.

This effect is thought to be due to choline’s influence on neurotransmitter systems that regulate growth hormone. For those looking to enhance their growth hormone levels for bodybuilding or anti-aging purposes, adding choline to their supplement regimen might provide an extra edge [Lal et al., 2005]. [7]

Cholinergic Agents & Somatostatin

Diving deeper into the science of growth hormone release, studies have highlighted the role of cholinergic agents in this process. These agents, which interact with the nervous system, have been found to boost growth hormone secretion by putting a brake on the release of somatostatin, a hormone that normally inhibits growth hormone release.

However, it’s important to note that while these findings are promising, the direct link between oral choline supplements and a significant decrease in somatostatin (and thus an increase in HGH) in humans is still a bit of a mystery. Most studies focus on cholinergic agents in general, rather than choline supplements specifically, leaving some room for further exploration in this area [Mazza et al., 1994]. [8]

Optimal Dosages for HGH Release:


  • A dosage of 25g of L-arginine administered as an infusion over 30 minutes showed a slight increase in HGH release, although not significantly, in patients with familial hypercholesterolemia (Muggeo et al., 1975).
  • In another study, a 30-minute infusion of 0.5 g/kg body weight of arginine monochloride led to an increase in plasma growth hormone levels in healthy young men (Nakagawa et al., 1969).


  • The highest dosage of L-ornithine hydrochloride (170 mg/kg) was found to elicit a predictable rise in serum growth hormone levels in bodybuilders (Bucci et al., 1990).
  • Oral administration of L-ornithine at 500 mg/kg at specific times influenced plasma growth hormone levels in mice (Matsuo et al., 2015).


  • Combined administration of 1200 mg of L-lysine with 1200 mg of L-arginine was shown to stimulate growth hormone release in male volunteers (Isidori et al., 1981).
  • A study on GHRP (Growth Hormone Releasing Peptide) indicated that dosages ranging from 1-10 ng/ml were effective in releasing growth hormone (Bowers et al., 1984).

Cholinergic Supplements:

  • There’s a lack of specific clinical studies directly linking cholinergic supplements with optimal dosages for enhancing HGH release. Most studies focus on the interaction of cholinergic pathways with growth hormone release mechanisms but don’t specify optimal dosages for supplements.


The trio of amino acids – L-arginine, L-ornithine, and L-lysine – has shown promise in enhancing human growth hormone (HGH) levels, particularly when it comes to exercise and certain therapeutic applications. These amino acids work synergistically to stimulate the release of HGH, which is crucial for muscle growth, recovery, and overall health. However, the effectiveness of these supplements can be inconsistent, influenced by factors like dosage, individual physiology, and the specific combination used.

To potentially boost their efficacy, incorporating cholinergic supplements, such as choline, might be beneficial. Choline, known for its role in brain health, also acts as an anti-somatostatin agent, which means it can inhibit the hormone somatostatin that normally suppresses HGH release.

By adding choline to the mix, it’s possible to enhance the HGH-releasing effect of these amino acids, making the combination more potent for those seeking muscle growth, anti-aging benefits, or therapeutic effects. However, it’s important to approach this combination with caution and ideally under the guidance of a healthcare professional, as more research is needed to fully understand the optimal use and efficacy of these supplements in boosting HGH levels.


Ron Males, a seasoned bodybuilder and sports performance enhancement specialist, is known for his unique perspective on the parallels between sports and sex. With a foundation in personal experience and comprehensive research on performance enhancement supplements, testosterone boosters, and muscle building supplements, Ron is dedicated to providing accurate information to counteract widespread misinformation. His interests extend to technology and biohacking, with a focus on optimizing all aspects of human life. Ron advocates for the use of herbs, performance-enhancing drugs, and other substances to boost performance in various settings, from corporate environments to physical fitness and daily life. He is always seeking innovative methods to expand human capabilities. As a supplement reviewer at, Ron uses his extensive knowledge to analyze supplements, providing readers with reliable, in-depth reviews to guide their decisions. His first-hand experience with several bodybuilding supplements, and understanding of herbs & bio-hacking makes him an invaluable asset to the community. Read more about him.