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Glucosamine is a monosaccharide, or simple sugar, that is found in the cell walls of joints and connective tissue of animals. It is also abundant in the exoskeletons of arthropods
http://answers.ask.com/Science/Nature/where_does_g...
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Those who are allergic to sulfates may take glucosamine hydrochloride and not sulfate, and they should avoid chondroitin sulfate. Glucosamine is derived from shrimp, oyster and crab
http://www.raysahelian.com/glucosamine.html
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Supple’s ® glucosamine is the only vegetarian glucosamine in the world and is made exclusively in the United States. Supple’s ® chondroitin comes only from American
http://buysupple.com/faq.php
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Glucosamine and chondroitin come in a wide variety of dosage forms. Tablets and capsules are common ways of taking the supplement, as well as powders and even juice-type drinks.
http://www.pharmas.co.uk/glucosamine-500mg-marine-...
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