Bests & Worsts Reviews from Amazon

I am having really bad side effects from this product. I have taken MSM in the past, and there's something off with this product. I now see it's from China, and I have found other people comment on being weary of MSM from China. This product did give me adverse side effects, and they have no return policy. So I am stuck with a bag of useless supplement!!! I recommend others to review a quality MSM provider...this isn't it!!!!!!!!!