Natural Factors

L-Arginine 500 mg

  • Regular price $9.19
  • May help support a modest improvement in exercise capacity in individuals with stable cardiovascular disease (CVD)
  • Supports protein synthesis
  • Helps replenish arginine levels during times of stress
  • Used to make nitric oxide, a compound in the body that helps relax blood vessels and improve blood flow


Natural Factors L-Arginine 500 mg is a non-essential amino acid involved in protein synthesis. It may help support a modest improvement in exercise capacity in individuals with stable cardiovascular disease (CVD). As a free-form amino acid, L-arginine is easier for the body to absorb and use than when consumed from food.

Medicinal Ingredients

Each capsule contains:
L-arginine (hydrochloride) 500 mg

Non-Medicinal Ingredients

Rice starch, vegetarian capsule (carbohydrate gum [cellulose], purified water), vegetable grade magnesium stearate (lubricant).

The amino acid L-arginine is used to make nitric oxide, a compound in the body that relaxes blood vessels. Studies have found that L-arginine may help with conditions that improve when blood vessels are relaxed. May help support a modest improvement in exercise capacity in individuals with stable cardiovascular disease (CVD). Supports healthy immunity.