Product Description 30mg Zinc, 450mg Magnesium, 10.5mg Vitamin B6 per 3 capsules. You can feel ZMA work the first night....a must try product! Enhance strength, endurance, recovery, and growth with the original ZMA formula from SNAC System. ZMA is an advanced zinc/magnesium formulation designed to replace deficiencies caused from exercise and stress. ZMA is a scientifically designed mineral-support formula that can dramatically increase natural levels of anabolic hormones and improve athletic performance. In fact, if taken as recommended, ZMA can increase free testosterone by 30% while boosting IGF-1 levels significantly.