PrimaForce ZMA is an anabolic formula producedby a proprietary manufacturing process, containing highly bioavailable forms of zinc and magnesium. Formulated with vitamin B6 to further enhance zinc and magnesium absorption and utilization, ZMA is a powerful non-steroidal, all natural dietary supplement clinically surmised to increase free testosterone, total testosterone and insulin-like growth factor (IGF-1) levels and enhance muscle strength significantly greater than placebo during a strength training program.