★★★★★
Hi
I started using MSM for a painful arthritic hip and noticed the difference within a couple of days. Don't know how it reacts with pharmaceuticals as I don't use them. By the way, as reassurance, they give MSM to horses so it must be OK since folks take good care and invest a lot of money in their animals. Matter of fact I'm getting my next supply from the local stables; much more economical.
