Now Sports ZMA 800mg Capsules are a zinc, magnesium, and vitamin B6 supplement that has been created to improve absorption and aid exercise recovery. Increasing these three nutrients in your system will help you gain muscle strength and stamina, heal faster, and sleep better. Zinc is essential for cellular growth, tissue healing, and immune system function. Magnesium is needed for electrolyte balance, energy production, and normal neuromuscular function. Because physical activity increases the requirement for these two minerals, ZMA® is an excellent supplement to help restore them. Now Sports provides a complete line of recovery supplements to help you get the most out of your training routines. Every product is thoroughly checked for purity and potency. NOW Sports products are verified by Informed-Sport, the world's top anti-doping organization, so you can be confident that they are pure, safe, and effective at all levels of competition.