Chitosan 100?s A Brief Overview Contains 800mg Chitosan per serving. HMTs? Chitosan capsules contain a unique fiber from marine polysaccharides. The fat binding properties in this ingredient are being talked about in weight management circles everywhere. WARNING: Do not take if allergic to shellfish or if you are pregnant, lactating or taking medication. Consult your health care professional before using or if unsure. Fat soluble vitamins such as vitamin A, D, E, K as well as essential fatty acids and medications should be taken four hours before or after taking Chitosan.