ibuprofen + ondansetron + misoprostol

This is a combination of three small molecule drugs—ibuprofen, ondansetron, and misoprostol—used adjunctively in the context of medication abortion or for managing pain and gastrointestinal side effects associated with uterine procedures. - **Ibuprofen** is a nonsteroidal anti-inflammatory drug (NSAID) that acts as an analgesic and antipyretic by inhibiting cyclooxygenase enzymes (COX-1 and COX-2), thereby reducing prostaglandin synthesis involved in pain, inflammation, and fever. - **Ondansetron** is a selective serotonin 5-HT3 receptor antagonist used to prevent nausea and vomiting by blocking serotonin receptors centrally in the chemoreceptor trigger zone and peripherally on vagal nerve terminals. - **Misoprostol** is a synthetic prostaglandin E1 analog that binds to prostaglandin E1 receptors on gastric parietal cells to reduce acid secretion, increase mucus/bicarbonate production for mucosal protection, and stimulate uterine contractions by binding smooth muscle cells in the uterus. In clinical practice, this combination is not available as a single commercial product but may be prescribed together during medication abortion regimens (with mifepristone) to manage cramping (ibuprofen), prevent or treat nausea/vomiting (ondansetron), and induce uterine contractions/expulsion of pregnancy tissue (misoprostol)[1][3][7][8]. Each component has distinct mechanisms but complementary roles in improving patient comfort during medical abortion.