... ibs-c extremely bad. For over 15 years. I've tried every medicine known to man. It works for about 2 to 3 months then stops. I switch medicines , works for a few months then stops. Now I'm trying Senokot. I like to try a little at first then up the dose. So any suggestions as to what type for side effects may happen... how long I should take these... has anyone been allergic? I hate taking new things, I am allergic to everything. I just want to prepare myself for what's to come. Thanks in advance