Metagenics Ultra-C 1000 features Vitamin C antioxidantSupplement FactsServings Per Container: 45Medicinal Ingredients:Each tablet contains:      Vitamin C (calcium ascorbate, niacinamide ascorbate, ascorbic acid, sodium ascorbate, magnesium ascorbate, ascorbyl palmitate, potassium ascorbate)     1,000 mgL-Lysine (L-lysine HCl)     36 mgCitrus Bioflavonoids (Citrus sinensis L., Citrus reticulata) fruit extract standardized to 45% hesperidin     35 mgD-Ribose     14 mgXylitol     10 mgL-Cysteine (L-cysteine HCl)     9 mgL-Glutathione     5 mg*Percent Daily Values are based on 2,000 calorie diet.**Daily Value not established.Non-Medicinal Ingredients: Cellulose, croscarmellose sodium, silicon dioxide, tetrasodium pyrophosphate, xylitol, silica, magnesium stearate (veg), and coating (hypromellose, hydroxypropylcellulose, and medium-chain triglycerides) Recommended Dose: Adults 19 and older take 1-2 tablets daily with food, a few hours before or after taking other medications or natural health products.Recommended Use: An antioxidant for the maintenance of good health. Helps in wound healing and connective tissue formation. Helps in the development and maintenance of bones, cartilage, and teeth.Caution: Consult a healthcare practitioner if you are pregnant or breastfeeding, and if you are taking prescription medications as citrus bioflavoids may alter the effectiveness of these medications. Keep out of reach of children. Do not use if perma seal is missing.This product is non-GMO and gluten-free.