Does Bacillus Calmette Guerin Interact with Isoniazid?
CDI records a contraindicated classification for Bacillus Calmette Guerin and Isoniazid. The stored summary is: Antituberculosis drugs should not be used to prevent or treat local irritative toxicities of TICE BCG, as these are not due to mycobacterial infection. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.
- Severity
- Contraindicated
- Bacillus Calmette Guerin Class
- Live Attenuated Bacillus Calmette-Guerin Vaccine
- Isoniazid Class
- Antimycobacterial
- Management
- Do not take together
- Data Source
- U.S. FDA via OpenFDA
What To Tell Your Doctor or Pharmacist
If you are taking Bacillus Calmette Guerin and your doctor is considering prescribing Isoniazid (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 about alternative medications that do not interact with your current regimen
- Ask how frequently you should be monitored while these are co-prescribed
- Never stop or change either medication without first consulting your healthcare provider