Nutrients Zinc. Dosage: Take 1 capsule daily. Pharmaceutical forms: Container of 30 capsules. Storage: Store in a cool, dry place. Ingredients: EnoSTIM®: (Grape extract (Vitis vinifera), apple extract (Malus pumila), and saffron stigmas (Crocus sativus) (90% total polyphenols) 300.00 mg per capsule. (Per capsule.) L-Arginine 100.00 mg per capsule. Zinc gluconate 74.24 mg per capsule. Tribulus terrestris extract 50.00 mg per capsule (80% saponins, equivalent to 700 mg of Tribulus terrestris). Rhodiola rosea dry extract 50.00 mg per capsule (3% salidrosides, equivalent to 350 mg of Rhodiola rosea).