Does Resmetirom Interact with Atorvastatin?
Resmetirom and Atorvastatin have a major drug interaction according to U.S. FDA drug labeling data. REZDIFFRA increases plasma concentrations of atorvastatin; limit daily dosage to 40 mg to reduce risk of statin-related adverse reactions. The mechanism involves resmetirom inhibits cyp2c8-mediated metabolism of atorvastatin. 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
- Resmetirom Class
- Thyroid Hormone Receptor beta Agonist
- Management
- Close medical supervision required
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Resmetirom and Atorvastatin occurs because resmetirom inhibits cyp2c8-mediated metabolism of atorvastatin. Clinically, this means rezdiffra increases plasma concentrations of atorvastatin; limit daily dosage to 40 mg to reduce risk of statin-related adverse reactions. 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 Resmetirom and your doctor is considering prescribing Atorvastatin (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