57yr old male. I was recently prescribed Levsin for my irritable bowel. I am also lactose intolerant. I have taken Levsin only a few times before meals and it seemed to make me gassy. Today I took it 30 min before every meal and had to have a bowel movement immediately after breakfast and lunch. I took it 30 min before dinner and immediately after eating I had serious case Of diarrhea. This is not the outcome I was hoping for. Is this an allergic reaction?