NOW L-Arginine Double Strength 1000mg is a premium amino acid supplement designed to support overall metabolic health. L-Arginine plays a key role in protein synthesis, urea metabolism, and the body’s natural detoxification processes. It also contributes to nitric oxide production, which supports healthy blood flow, cardiovascular function, and muscle performance. With its double-strength formula, this supplement provides optimal support for energy, endurance, and overall wellness.