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Compare Tigan vs. Zofran

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.

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