Does Codeine Interact With Rifampin?
Examples: Rifampin, carbamazepine, phenytoin Inhibitors of CYP2D6 Clinical Impact: Codeine is metabolized by CYP2D6 to form morphine.
Severity: Minor
Severity basis: drug interactions section. Combining Codeine (Opioid analgesic) and Rifampin (Rifamycin antibiotic (strong CYP3A4 inducer)) is classified as a minor interaction.
What to Do
This is generally a minor interaction, but review it with your pharmacist to be sure it is safe for you.
From the FDA Label
Examples: Rifampin, carbamazepine, phenytoin Inhibitors of CYP2D6 Clinical Impact: Codeine is metabolized by CYP2D6 to form morphine.
Source: FDA structured product labeling (set_id 010905f9-3bcb-4b50-9fe8-a3ad0010f14c).
Check these against your full medication list in our free Interaction Checker
This information is educational — not medical advice.
This page is provided for general educational purposes and summarizes publicly available data from sources such as the U.S. Food & Drug Administration. It is not a substitute for the judgment of a licensed clinician and should not be used to start, stop, or change any medication. It may be incomplete or out of date, and individual circumstances vary. Always talk with your prescriber or pharmacist about your specific medications and health conditions. If you think you may have a medical emergency, call 911.
Other Codeine Interactions
- Codeine + Buprenorphine Naloxone(major)
- Codeine + Hydrocodone Acetaminophen(moderate)
- Codeine + Ketoconazole(moderate)
- Codeine + Morphine(moderate)
- Codeine + Oxycodone(moderate)
- Codeine + Alprazolam(minor)
- Codeine + Amiodarone(minor)
- Codeine + Bupropion(minor)
- Codeine + Carbamazepine(minor)
- Codeine + Cyclobenzaprine(minor)
- Codeine + Fluoxetine(minor)
- Codeine + Gabapentin(minor)
- Codeine + Mirtazapine(minor)
- Codeine + Paroxetine(minor)
- Codeine + Phenytoin(minor)
- Codeine + Pregabalin(minor)
- Codeine + Tramadol(minor)
- Codeine + Trazodone(minor)
Other Rifampin Interactions
- Rifampin + Apixaban(major)
- Rifampin + Clopidogrel(major)
- Rifampin + Dabigatran(major)
- Rifampin + Doxycycline(major)
- Rifampin + Edoxaban(major)
- Rifampin + Fluconazole(major)
- Rifampin + Itraconazole(major)
- Rifampin + Ketoconazole(major)
- Rifampin + Lansoprazole(major)
- Rifampin + Phenytoin(major)
- Rifampin + Rivaroxaban(major)
- Rifampin + Ticagrelor(major)
- Rifampin + Warfarin(major)
- Rifampin + Atorvastatin(moderate)
- Rifampin + Carvedilol(moderate)
- Rifampin + Clarithromycin(moderate)
- Rifampin + Cyclosporine(moderate)
- Rifampin + Eszopiclone(moderate)
- Rifampin + Gemfibrozil(moderate)
- Rifampin + Glimepiride(moderate)
- Rifampin + Glipizide(moderate)
- Rifampin + Hydrocodone Acetaminophen(moderate)
- Rifampin + Methylprednisolone(moderate)
- Rifampin + Mirtazapine(moderate)
- Rifampin + Oxycodone(moderate)
- Rifampin + Pioglitazone(moderate)
- Rifampin + Tacrolimus(moderate)
- Rifampin + Tramadol(moderate)
- Rifampin + Zolpidem(moderate)
- Rifampin + Aripiprazole(minor)
- Rifampin + Buprenorphine Naloxone(minor)
- Rifampin + Canagliflozin(minor)
- Rifampin + Carbamazepine(minor)
- Rifampin + Carbidopa Levodopa(minor)
- Rifampin + Celecoxib(minor)
- Rifampin + Dapagliflozin(minor)
- Rifampin + Dexamethasone(minor)
- Rifampin + Diazepam(minor)
- Rifampin + Digoxin(minor)
- Rifampin + Diltiazem(minor)
- Rifampin + Enalapril(minor)
- Rifampin + Glyburide(minor)
- Rifampin + Hydroxychloroquine(minor)
- Rifampin + Lamotrigine(minor)
- Rifampin + Levothyroxine(minor)
- Rifampin + Liothyronine(minor)
- Rifampin + Losartan(minor)
- Rifampin + Metoprolol(minor)
- Rifampin + Morphine(minor)
- Rifampin + Nifedipine(minor)
- Rifampin + Nortriptyline(minor)
- Rifampin + Olanzapine(minor)
- Rifampin + Ondansetron(minor)
- Rifampin + Prednisolone(minor)
- Rifampin + Propranolol(minor)
- Rifampin + Quetiapine(minor)
- Rifampin + Simvastatin(minor)
- Rifampin + Tadalafil(minor)
- Rifampin + Trazodone(minor)
- Rifampin + Valproic Acid(minor)
- Rifampin + Verapamil(minor)