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- Customer Reviews (0)
This product is MSM imported from China and is certified to be 99.9% pure or better. It is purified using the double-crystallization method rather than the distillation method used by our US-made OptiMSM. Distillation is considered to be a superior method, thus why OptiMSM is priced significantly higher. Although this product does come from China, we don't have any reservations recommending it for those on a budget. And just as in our brand-name products, there are no fillers or additives in this product. It is about the consistency of sugar. We do receive Certificates of Analysis (COAs) from our supplier for each batch that can be provided upon request.