Does Ondansetron Hydrochloride Interact with Selective Serotonin Reuptake Inhibitors Ssri?
Ondansetron Hydrochloride and Selective Serotonin Reuptake Inhibitors Ssri have a major drug interaction according to U.S. FDA drug labeling data. Concomitant use may cause serotonin syndrome including altered mental status, autonomic instability, and neuromuscular symptoms. Monitor for emergence of serotonin syndrome; discontinue ondansetron if symptoms occur. The mechanism involves serotonergic activity. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.
- Severity
- Major
- Ondansetron Hydrochloride Class
- Serotonin-3 Receptor Antagonist
- Management
- Close medical supervision required
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Ondansetron Hydrochloride and Selective Serotonin Reuptake Inhibitors Ssri occurs because serotonergic activity. Clinically, this means concomitant use may cause serotonin syndrome including altered mental status, autonomic instability, and neuromuscular symptoms. monitor for emergence of serotonin syndrome; discontinue ondansetron if symptoms occur. This is classified as a major interaction, meaning it could cause serious harm if not properly managed. Your healthcare provider may need to adjust dosages, substitute one medication, or increase monitoring frequency.
What To Tell Your Doctor or Pharmacist
If you are taking Ondansetron Hydrochloride and your doctor is considering prescribing Selective Serotonin Reuptake Inhibitors Ssri (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask how frequently you should be monitored while these are co-prescribed
- Ask whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider