Formal Name: 2-Amino-5-guanidinopentanoic acid
Supplement Forms: Pills, food, liquid

Recommended Daily Allowance

  • Infants: (0 to 12 Months) N/A
  • Children: (1 to 13 years) N/A
  • Adolescents: (14 to 18 Years) N/A
  • Adults: (19 and Older) N/A
  • Lactating Women: N/A
  • Pregnant Women: N/A

Notes: There is no established RDA for the Arginine amino acid.

Additional Information

Arginine is originally required through the dietary intake when the body is in the primary growth period. Afterwards, the body is able to produce enough arginine required for proper health. It can be found in two forms, l-arginine and d-arginine. The former is more compatible with the human body and is the form that is found as an ingredient in creatine and other strength gain supplements. No recommended daily allowance has been established for arginine.

Bodily Functions Arginine Assists

Arginine plays various roles in the muscular and immune system. It is one of several components that make up creatine, a well known protein that is essential in producing and using energy in the muscular system. it is needed to produce nitric oxide, a molecule that is key in dilation and constriction of the cardiovascular system. Arginine is also present in the immune system where it stimulates the thymus gland, thus aiding in production and secretion of antibodies.

Symptoms Of Deficiency:
  • Muscular weakness
  • Impaired insulin production
  • Skin rashes
  • Hair loss
  • Constipation
Foods High In Arginine

Arginine can be found freely in plants such as garlic and ginseng. Dietary sources include peanuts, cashew nuts, water melon seeds, and walnuts. Most green vegetables also contain adequate amounts of arginine.

Ailments That Arginine Helps Against:
  • Improves symptoms of coronary artery disease
  • Aids in the treatment of erectile dysfunction
  • Possible reduction in blood pressure
  • May aid in atherosclerosis treatment
Side Effects And Toxicity

High doses of 15-30 grams per day are associated with nausea, abdominal cramps, and diarrhea. Severity of side effects may increase if arginine is administered very rapidly.