XL Nutrition Test Booster is designed to support testosterone levels in males by combining a specific combination of ingredients including D-Aspartic Acid, Fenugreek, Zinc and Boron. Also included are Vitamin B6, Vitamin C and Vitamin D3 to support optimal immune function and to reduce the feeling of tiredness and fatigue. Recommended Use Take 3 capsules daily, either in the morning or one hour before bed time. Nutritional Information  Supplement Facts Per 3 Capsules D-Aspartic Acid 1000mg Fenugreek Powder (4:1) 533mg Magnesium 336mg (90% RI) Vitamin C 100mg (125% RI) Zinc 16.2mg (162% RI) Boron 10mg Vitamin B6 8.2mg (585% RI) Vitamin D3 1200IU (600% RI)