Interactions between your selected drugs
promethazine ↔ ondansetron
Applies to: Phenergan (promethazine), Zofran (ondansetron)
Using promethazine together with ondansetron can increase the risk of an irregular heart rhythm that may be serious. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or fast or pounding heartbeats during treatment with these medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Other drugs that your selected drugs interact with
Phenergan (promethazine) interacts with more than 500 other drugs.
Zofran (ondansetron) interacts with more than 100 other drugs.
Interactions between your selected drugs and food
No results found - however, this does not necessarily mean no interactions exist. ALWAYS consult with your doctor or pharmacist.
- Zofran Information for Consumers
- Zofran Information for Healthcare Professionals (includes dosage details)
- Side Effects of Zofran (detailed)
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