Hi,I'm an IBS-C predominate person, but when I do have a "normal" BM, my colon spasms terribly, which leaves me with cramps and pains and feeling like I constantly have to go. I've read about Bentyl which I'm going to suggest to my doctor, but has anyone had any negative side effects from using Bentyl? Also, is it available without a prescription? If not, what kinds of "alternative" meds are good for spastic colons? I've been using enteric coated peppermint capsules for a few days and they seem to help with cramps and gas, but the spasms are still there. Any suggestions?