glucosamine produced from a corn base,2 tablets provides the optimum level,suitable for vegetarians/vegans and shellfish-free,easy-to-swallow, taste-free tabletsnature\'s best\'s glucosamine hci (hydrochloride) is derived from a sustainable corn-based source and it\'s the first glucosamine supplement to be made from this food source in the uk, making it suitable for vegetarians and vegans, as well as anyone suffering from a shellfish allergy. we\'ve split the daily dose of 1320mg glucosamine into two glucosamine 660mg tablets, so that the tablets are smaller and easy to swallow. furthermore, the tablets are coated to make them easy to swallow and made in the uk to gmp standards. 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 and this is the form we normally recommend. however, the hcl form contains slightly more glucosamine per gram and in this case, has the benefit of being not derived from shellfish. if you\'d like help choosing which glucosamine to take, please |contact our friendly nutrition advisors//aadvice//class=f-brand !important|, who will be more than happy to help.