Met-Rx Hardcore ZMA is a high quality bodybuilding supplement from Met-Rx. Each serving delivers hormone support & essential vitamins & minerals. ZMA, the anabolic male mineral supplement that increases growth hormone & testosterone levels. Ideal for the natural, hard training male athlete.ZMA is a unique, university-tested, patent-pending anabolic mineral support formula containing highly bio available forms of Zinc & Magnesium as Zinc L-Monomethionine & covalently-bound Zinc / Magnesium Aspartate. ZMA is an advanced formulation designed to significantly enhance strength, endurance, healing, recovery & growth. Zinc is an anabolic element & promotes healing, tissue repair & muscle growth. Zinc also increases the effect of growth hormone & testosterone. Both zinc & magnesium increase the effect of growth hormone. The body’s maximum daily release of growth hormone occurs about 90 minutes after going to sleep. Met-RX ZMA can be used by athletes of all different sports, & is useful for both male & female athletes.