4 days post op Breast Reduction, I haven't had bowel movements. Any suggestions?

General anesthesia can cause constipation- laxatives should help, as well as  fiber powder -- we usually let our patients know during their pre-op that constipation may occur.. But it is best to ask your operating surgeon.

This is a common side effect of
both anesthesia and narcotics. I suggest taking an over the counter laxative
and keeping your PS informed of the situation. Best regards.

In my practice I prescribe (actually  it can be purchased over the counter) Colace when patients get constipated with narcotic use. However, I would encourage you, and ALL patients with medical questions like this to speak to your doctor (operating surgeon)! I'm sure he/she would want to know if you are having any issues and he/she knows your history and condition better than anyone online.