★★★☆☆
My scalp broke out badly. I have been on MSM for 2 weeks.
I have went down to a 1/2 tsp a day and I take it in the evening around dinner time. It helps me sleep but if I take it too close to bedtime it keeps me awake.
This has been a strange drug for me. I also broke out in a rash on my arms. That has seemed to subside but the stoned feeling I can't wait for it to go away. Good luck to all. Remember what doesn't affect you may affect someone else.