MSM Side Effects: What You Need to Know Before You Take It

Regarding MSM, I just wanted to warn people that I have had adverse affects with it. I started taking it for joint pain (2 to 4 thousand milligrams a day) and it seemed like it was healing, until about 30 days in one of my knees started to hurt. I thought I may have just injured it slightly and didn't think anything of it. Then maybe another week and a half in my other knee (that never had any pain prior) and both my shoulders started hurting. MSM was the only thing that I had never done before that I was doing differently. I quit taking it and about a week later all of the pain was gone. I also just injured my right knee and have to question whether or not this actually made my joints worse.