I am new here, and it is very nice to meet you guys. I started MSM about a week ago and went up to 10 grams per day. I have started having heart fluttering and palpitations in the last few days and was wondering if you guys had ever heard of this? Will I be ok? Should I stop the MSM altogether? Can I still exercise if its not going to hurt me?

I have read where several experts say that the MSMS is cleaning old caffeine and stimulants out of my system, they may be right.

Stimulants like caffeine are not stored in the tissues.  More likely it is either an allergy to the MSM, which can occur, or it is unrelated.  You could stop it for a few days to see if the problem stops.  If it does try the MSM again and see if it starts up again.