Get fundamental amino acid nutrition for less with Swanson L-Arginine. Our L-arginine makes an economical and effective addition to your dietary plan, especially if you are interested in supporting cardiovascular and immune system health. Each convenient capsule delivers 500 mg of free-form L-arginine.
  • Valuable, free-form amino acid nutrition
  • Provides fundamental nourishment for immune and cardiovascular systems
  • Teams with methionine and glycine to help with the making of energy in your muscles
  • 100% MONEY BACK GUARANTEE - Our products reflect our commitment to giving you the best quality and service at the best price. We guarantee that every product you purchase is made from the purest, freshest nutrients and meets the highest quality standards. If you aren’t completely satisfied with any product(s) purchased within the last 30 days, simply return the unused portion to us for a full refund.
  • Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months.