Klaire Labs Multi-Element Buffered C Powder with Quercetin Bioflavonoid & L-GlutAdded calcium, magnesium, and potassium create a buffered vitamin C product that is gentle on the stomach. Includes zinc, manganese, and copper in well-utilized forms. Potent bioflavonoid Quercetin and reduced antioxidant L-glutathione are included to potentiate the function of vitamin C.* Hypoallergenic* product free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans. Contains no artificial colors, flavors, or preservatives. Trusted by healthcare practitioners since 1969, products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner. Vitamin C is important for immune function and antioxidant protection, as well as collagen and connective tissue production.* Multi-Element Buffered C adds calcium, magnesium, and potassium to ascorbic acid to create a buffered product that is gentle on the stomach. This formulation includes zinc, manganese, and copper in well-utilized forms. Quercetin, a potent bioflavonoid, and reduced L-glutathione, an antioxidant, are included to potentiate the function of vitamin C.*Contains 2,600 mg of Vitamin C per heaping teaspoon. was founded in 1969 by Claire Farr, who was driven by a passion to develop potent, hypoallergenic nutraceuticals. products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner. Payment DetailsWe currently accept payment via PayPal only. Once payment is cleared, we will dispatch your shipment within 1-3 business days. Please refer to the "Shipping" tab for more information regarding shipping speed to your destination.Return PolicyAs our valued customer, we will do our best to make sure the product you receive arrives to you on time and as expected. If you are not satisfied with your purchase, please contact us within 30 days of receiving your order to process a return.