Diphenoxylate is a medication primarily used to treat diarrhea. It works by slowing down the movement in the gut, allowing for more water to be absorbed from the feces, which helps to reduce the frequency of bowel movements. Diphenoxylate is often combined with atropine to discourage misuse. This medication is typically taken in tablet form and is available by prescription. While effective for managing diarrhea, it can cause side effects such as dizziness, drowsiness, and constipation. It is important to use diphenoxylate only as directed by a healthcare professional to avoid potential complications.