Natural Factors

L-Arginine 1000 mg

  • Regular price $18.39
  • 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 1000 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 tablet contains:
L-arginine (hydrochloride) 1000 mg

Non-Medicinal Ingredients

Microcrystalline cellulose, dibasic calcium phosphate dihydrate, hydroxypropylcellulose, coating (carbohydrate gum [cellulose], glycerin), stearic acid, vegetable grade magnesium stearate (lubricant), silica.

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.