Drug interactions
Orforglipron + Simvastatin
Severity: Moderate
Orforglipron and Simvastatin: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Orforglipron increases systemic exposure to simvastatin acid, roughly doubling it. Higher statin exposure raises the risk of myopathy and rhabdomyolysis.
What this interaction means in plain words
Orforglipron and Simvastatin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Orforglipron belongs to Endocrine; Simvastatin belongs to Cardiovascular.
Why it happens
Orforglipron appears to increase simvastatin acid exposure, possibly through delayed gastric emptying or altered metabolism or transport; the exact mechanism is not firmly established.
What to do
Limit simvastatin to no more than 20 mg once daily during co-therapy, and counsel patients to report unexplained muscle pain or weakness. Consider a statin less affected by this interaction if a higher intensity is needed.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Orforglipron
- Orforglipron + Ritonavir Major
Other interactions of Simvastatin
- Atazanavir + Simvastatin Contraindicated
- Clarithromycin + Simvastatin Contraindicated
- Cobicistat + Simvastatin Contraindicated
- Cyclosporine + Simvastatin Contraindicated
- Cyclosporin + Simvastatin Contraindicated
- Danazol + Simvastatin Contraindicated
Frequently asked questions
Can I take Orforglipron with Simvastatin?
MediHelp rates the interaction as moderate. Orforglipron and Simvastatin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Orforglipron increases systemic exposure to simvastatin acid, roughly doubling it. Higher statin exposure raises the risk of myopathy and rhabdomyolysis.
How serious is the interaction between Orforglipron and Simvastatin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Limit simvastatin to no more than 20 mg once daily during co-therapy, and counsel patients to report unexplained muscle pain or weakness. Consider a statin less affected by this interaction if a higher intensity is needed.
What other medicines interact with Orforglipron?
MediHelp also lists interactions of Orforglipron with, for example, Ritonavir. The full list is on the Orforglipron page.
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