I was on Aciphex 20mg once daily for about two weeks. I had a lot of gas during this time and noticed some improvement with the acid reflux. My doctor increased my dose to 20 mg twice a day. When this was done, I began getting severe stomach cramping and diarhea (went over twenty times in one day). I stopped the medication and hopefully will feel better soon. Now I just need to find a solution for my acid reflux. I don't want any more of these medications!