Question: can you take nausea medicine during colonoscopy prep?
Answer: Drinking some cold water along with the prep liquid may also help. If you already have an anti-nausea medication at home and have tolerated it in the past, you can try taking a dose. Examples might include ondansetron (Zofran), promethazine (Phenergan), prochlorperazine (Compazine) or metoclopramide (Reglan).