Arginine & Ornithine

NOW Arginine & Ornithine is formulated with two essential amino acids to support an active lifestyle. Arginine plays key role in urea metabolism, a process that facilitates safe excretion of toxic ammonia by the kidneys. Ornithine, derived from arginine is used to synthesize other amino acids citrulline, glutamic acid, and proline. Arginine & Ornithine supplements help build healthy muscles.