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L-Arginine Supplements

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Gen-Tec Arginine AKG
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Prana Intra Strength Workout
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Vander Kraats The Nitric Factor
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About L-Arginine Supplements

L-Arginine is a non-essential amino acid that the human body has the ability to synthesize. The fact that arginine is non-essential does not detract from its importance, however. The fact that the body can manufacture arginine, even though it is often consumed through the diet, is an indication of just how important it really are. Some of the best sources of L-Arginine are pumpkin seeds, soybeans, peanuts, dairy, chickpeas and lentils.


L-Arginine alpha-ketoglutarate (AKG) is simply an Arginine molecule attached to an AKG molecule. AKG is an interesting compound, and a natural constituent of the citric acid cycle or Kreb's cycle. AKG is situated between isocitrate and succinyl CoA in the Kreb's cycle. AKG supplementation may be helpful during recovery from injuries and to support wounds healing, as it is believed to increase protein synthesis. It may also assist with muscle recovery and cellular energetics.


L-Arginine has many uses in the body, the most well-known and popularised is it's use for Nitric oxide (NO) production. NO is a gas produced in the body that signals the smooth muscles to relax, thus dilating blood vessels and allowing for improved peripheral circulation. This means more blood, which carries nutrients and oxygen, will arrive at the extremities, including muscle tissue. For this reason, many gym goers use L-Arginine to help improve muscle "pumps" and to assist with performance. However, the AKG molecule may be just as effective, in assisting with recovery and muscle growth. Arginine is also used in the body for the natural synthesis of creatine, proline, agmatine and as a structural component of muscle tissue.


Arginine has been demonstrated in clinical trials to reduce markers of cardiovascular disease. This was reported in the journal F1000 Research in 2014. At 2,000mg (2 grams) per day, this amino acid was shown to reduce triglycerides, LDL cholesterol and even fasting blood sugar. Though amino acids are typically only categorised as essential or non-essential, meaning the body can synthesize them or it can't, arginine is labelled by some scientists and healthcare professionals as a semi or conditionally-essential amino acid. This categorisation has been suggested for some metabolically important amino acids, as under specific stressful physiological conditions, the body may not be able to synthesize adequate amounts of these amino acids to meet demands.


Other research has demonstrated the ability of arginine to increase growth hormone secretion from the pituitary gland in humans, perhaps mediated by decreases in somatostatin secretion. This makes arginine one of the few natural  compounds to do so. The role of growth hormone is complex in the human body, where it supports the regeneration of many soft tissues, such as tendons, ligaments and collagen, as well as supporting muscle mass repair and growth. This makes arginine a unique amino acid for supporting the various soft tissues of the body, and also recovery from sports and exercise. This biological effect was reported all the way back in 1982, in Clinical and Translational Endocrinology.