GNC's Men's Staminol™ Ultra. Our Premium Max Strength Formula is timed release and includes the vital nutrients such as zinc required to support normal testosterone levels and vitamin B6 to help regulate hormonal activity & reduce fatigue. Each serving of 2 tablets provides: Vitamin E 21mg a-TE, Thiamine (Vit B1) 2mg, Niacin 25mg, Vitamin B6 0.25mg, Folic Acid 400mcg, Vitamin B12 2mcg, Zinc 15mg, Selenium 75mcg, L-Argnine 1000mg, Testogen Fenugreek Seed Extract 600mg, Fruitflow Water-Soluble Tomato Concentrate 150mg, Maca Root Powder 100mg, Oat Brand Powder 100mg, Koreran Ginseng Root Powder 55mg, Saw Palmetto Powder 50mg. 1. Zinc conributes to the maintenance of normal testosterone levels in the blood. 2. Vitamin B6 conributes to the regulation of hormonal actitivity. 3. Vitamin B6 contributes to the reduction of tiredness and fatigue. Directions: Take 2 tablets daily.