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Title: DONA glucosamine sulfate really works
Review: My doctor uses DONA crystalline glucosamine sulfate and suggested I use it, which I have for a few years and have found that it really works. This product is the one that was used in clinical tests, is the purest form of glucosamine sulfate available. I gave a 90-packet box to my brother, who had used other glucosamine sulfate products and he said he could see a big positive difference with DONA. He is now ordering DONA on his own.
