Impryl L-Cystine- Betaine- Zinc- Food Supplement containing B Vitamins 30 Tablets Content: Betaine - 200 mg L-cystine - 200 mg Niacin - 16 mg Zinc - 10 mg Vitamin B6 - 1.4 mg Riboflavin (Vit. B2) - 1.4 mg Folic acid (as methylfolate) - 400 µg Vitamin B12 (as methylcobalamin) - 2.5 µg Usage: It is recommended to take 1 tablet a day.