as a pharmacist if i had a patient who came to me and asked me this question i would actually be a little concerned. i would ask them for how long they have been taking the imodium and when did they notice this change in their stool color. sometimes when we here about dark stools there is a concern that there is some internal bleeding going on. so as a pharmacist my recommendation to this patient would be to stop taking the imodium and get it checked out by a physician or healthcare provider immediately.
can imodium turn your stool dark?