Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Trimethobenzamide (Tigan) and ondansetron (Zofran) are both antiemetic medications used to treat nausea and vomiting. They are similar in that they can both be used to manage nausea and vomiting after surgery. However, they differ in several ways. Trimethobenzamide is specifically FDA-approved for nausea and vomiting related to the stomach flu (gastroenteritis) or surgery, while ondansetron is approved for preventing nausea and vomiting from cancer treatments and surgery. Trimethobenzamide is available as a generic oral capsule and a brand-only intramuscular injection, whereas ondansetron is available in various forms, including tablets, orally disintegrating tablets, oral solution, and injections. Trimethobenzamide is typically taken 3 to 4 times a day, while ondansetron is taken every 8 to 12 hours. Common side effects of trimethobenzamide include drowsiness, headache, and diarrhea, while ondansetron may cause headache, fatigue, and constipation. Also, ondansetron can interact with medications that affect serotonin levels, which is not a concern with trimethobenzamide.
Tigan (trimethobenzamide)
Ondansetron (Zofran)
Tigan (trimethobenzamide)
Ondansetron (Zofran)
Summary of Tigan vs. Zofran
Summary for Antiemetic
Prescription only
Tigan (trimethobenzamide) is an antiemetic that's used to treat nausea and vomiting from a stomach flu or nausea and vomiting that happens after surgery. This medication is approved for use in adults only. It's available as a generic capsule that's taken by mouth 3 or 4 times a day. It's also available as a brand-only injection, and the dosage depends on how bad your symptoms are and your response to the medication. Potential side effects include diarrhea, drowsiness, and headache.
Summary for Antiemetic
Prescription only
Ondansetron (Zofran) is an antiemetic (or anti-nausea) medication. It's used to prevent nausea and vomiting after surgery or cancer treatments. It works by stopping a chemical called serotonin from binding to receptors in the brain that cause the feeling of nausea and vomiting. Ondansetron (Zofran) is taken by mouth, typically every 8 to 12 hours. It comes in different formulations, including orally disintegrating tablet (ODT) and oral solution. It can also be given as injection by a healthcare professional (HCP) in a hospital setting. Side effects of this medication include headache, tiredness, and constipation or diarrhea.
Indications of Tigan vs. Zofran
Indications for
•Nausea and vomiting related to the stomach flu or surgery