I am still kind of new here. I have read about some of you taking MSM. I am just wondering what it is? Is it from conventional medicinal pratices or herbal? Fill me in!!! Also, does anyone take Levsin (sublingual) for cramps. I just got a prescripton yesterday and have not used any yet. I just wanted to see if it is effective. I tend to get crippling abdominal cramps and am desperate to find a way to help releive them. Thanks!!!!