Optimum Nutrition | On Zma - 90 Caps Vitamins & Minerals Optimum Nutrition | Zma Two Recent Clinical Trials Have Shown That A Synergistic Combination Of Zinc Monomethionine Aspartate, Magnesium Aspartate, And Vitamin B6 Can Significantly Increase Hormone Levels And Muscle Strength In Well-Trained Athletes. The Novel Zinc Monomethionine Aspartate Formula May Also Help To Increase Endurance, Healing, Growth And Restful Sleep. Suggested Use: As A Dietary Supplement Take 2-3 Capsules Daily, Preferably Between Evening Meal And Bedtime. For Best Results, Men Should Use 3 Capsules Daily. The Recommended Dosage For Women Is 2 Capsules Per Day. | On Zma - 90 Caps