, high potency; 2 tablets daily provides 1500mg of glucosamine hcl, glucosamine from corn suitable for vegetarians & shellfish free, pharmaceutical gmp standards, small coated taste-free tabletsthe glucosamine in this product is produced from a corn-base rather than from the shells of shellfish that most glucosamine sulphate products are derived from. this means this product is suitable for both vegetarians & those with an allergy to shellfish. glucosamine can either be presented in the form of a sulphate compound or a hydrochloride compound (called hcl) which is the form used in this product. most research has been carried out on the sulphate form & this is the form we normally recommend (sulphate vs hcl). however the hcl form actually contains slightly more glucosamine per gram & has the benefit of being not derived from shellfish.