Arginine is a non-essential amino acid. It stimulates the immune system. It is important for tissue growth, regeneration, and healthy nitric oxide production.

Arginine is a precursor to nitrous oxide, which is a vasodilator. In other words, it “opens” blood vessels allowing for increased blood flow.

With increased blood flow there is more nutrient movement throughout the body, as well as a better functioning lymphatic system to remove waste.

All of this increases the body’s immunity.

What does Arginine do?

  • Promotes a healthy cardiovascular system
  • Raises production of nitric oxide
  • Major blood pressure regulator
  • Proper function of the Thymus gland
  • Stimulates healthy Immune function
  • Stimulates Human Growth Hormone (HGH)
  • Important for Nitric Oxide production
  • Promotes healing
  • Detoxifies the Liver
  • Detoxifies excess ammonia

Conditions that Arginine May Help

  • Cystic Fibrosis (CF)
  • Parasitic Detox
  • Hypertension (High Blood Pressure)
  • Obesity
  • Stress
  • Vascular Conditions
  • Atherosclerosis
  • Heart Conditions
  • Cancer
  • Non-Insulin Dependent Diabetes (NIDD)
  • Erectile Dysfunction (ED)
  • Wound healing


When looking for an arginine supplement, always look for the “L” in front of the name, l-arginine. The “L” signifies that the amino acid is in ‘free form’ and this is the only form you should take as a supplement.

L-arginine dosages range from 500 mg – 10 grams per day; occasionally higher dosages have been used.

L-arginine and l-ornithine are often found in a single supplement.  Arginine is actually the precursor of the non-essential amino acid ornithine.

Many have found that Arginine is best taken during the day whereas ornithine is best taken at night. For some, arginine acts as a mild stimulant whereas ornithine seems to have a more relaxing effect. For those who do not experience the stimulant and relaxing effects, formulas that have both amino acids are common and work well together.


L-arginine has no known toxicity. With some of the higher dosages, minor gastrointestinal symptoms may occur. This is best avoided by increasing the dosage slowly and/or by reducing the dosage if any GI symptoms occur.

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