Universal Nutrition uses only the highest quality patent-pending ZMA. ZMA is the only non-steroidal, all natural dietary supplement that is 100% clinically proven to increase Testosterone levels and increase strength in athletes. Increased muscle tissue growth and recovery can only be achieved if your body is kept in an anabolic state for a significant length of time. ZMA will help your body to stay in this anabolic state thereby increasing your body's overall lean muscle mass.* Instructions : Use as a dietary supplement to achieve desired muscular weight gain. Men take 3 (women take 2) capsules daily, preferably on an empty stomach 30-60 minutes before bedtime. For best results, avoid taking with dairy or calcium-containing foods or supplements.