Very little: Glucosamine exists as a chemical pair with an oppositely charged molecule. Sulfate or an acetyl group can fill this roll. Nutritionally, the glucosamine is what matters so there is really little difference.
Answered 6/11/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
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A doctor has provided 1 answer
2 doctors weighed in across 2 answers
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