Does Acetazolamide Extended Release Interact with Methenamine Salts?
Acetazolamide Extended Release and Methenamine Salts have a moderate drug interaction according to U.S. FDA drug labeling data. Acetazolamide may prevent the urinary antiseptic effect of methenamine. 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
- Moderate
- Acetazolamide Extended Release Class
- Carbonic Anhydrase Inhibitor
- Management
- Monitor for effects
- Data Source
- U.S. FDA via OpenFDA
What To Tell Your Doctor or Pharmacist
If you are taking Acetazolamide Extended Release and your doctor is considering prescribing Methenamine Salts (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 whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider