Pure Encapsulations - Adenosyl/Hydroxy B12 - Hypoallergenic Blend with Vitamin BNerve Support: Adenosyl/Hydroxy B12 is a vitamin B12 blend formulated for healthy nerve support.* Metabolism And Mitochondrial Support: Adenosyl/Hydroxy B12 supports carbohydrate metabolism for the enzyme methylmalonyl-CoA provides adenosylcobalamin, the major form of B12 store in the mitochondria of cells* Activated B12: Adenosylcobalamin is an activated form of B12 similar to methylcobalamin, and is the major form of vitamin B12 stored in the mitochondria of cellular tissues.* Pure Ingredients: manufactures a line of hypoallergenic, research-based dietary supplements. Products are meticulously formulated using pure ingredients designed to deliver predictable results for the benefit of all patients, even the most sensitive.* Free From: products are free from wheat, gluten, egg, peanuts, magnesium stearate, hydrogenated fat, artificial sweeteners and colors, and other unnecessary excipients. Any product containing ingredients derived from allergens, such as soy, dairy or shellfish is clearly labeled. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Hydroxycobalamin is a precursor form of vitamin B12 converted in the body to both methylcobalamin and adenosylcobalamin. It is similar to cyanocobalamin without the cyanide moiety. Adenosylcobalamin is an activated form similar to methylcobalamin. While methylcobalamin is found in the cytosol of cells and predominates in blood and other fluids, adenosylcobalamin is the major form of vitamin B12 stored in the mitochondria of cellular tissues. It is a key cofactor in carbohydrate metabolism for the enzyme methylmalonyl-CoA mutase used to produce succinyl-CoA. Optimal levels also support healthy synthesis of neuronal myelin.* 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.