Sildenafil and Simvastatin: Drug Interaction Guide
Quick answer: Sildenafil and Simvastatin have a minor interaction — typically manageable with awareness.
How Sildenafil interacts with Simvastatin
Sildenafil is a weak CYP3A4 substrate and minor inhibitor; co-administration with simvastatin produces a small increase in sildenafil exposure without clinically significant statin level changes in most patients.
What you should do
No routine dose adjustment is required; reassure patients but counsel about muscle symptoms and reconsider doses in elderly or hepatically impaired patients.
Key facts
Severity
Minor — typically manageable
Mechanism
Sildenafil is a weak CYP3A4 substrate and minor inhibitor; co-administration with simvastatin produces a small increase ...
Action
No routine dose adjustment is required; reassure patients but counsel about muscle symptoms and reconsider doses in elde...
Frequently asked questions
Can I take Sildenafil and Simvastatin together?
Usually yes, with awareness. No routine dose adjustment is required; reassure patients but counsel about muscle symptoms and reconsider doses in elderly or hepatically impaired patients.
What is the severity of this interaction?
The interaction between Sildenafil and Simvastatin is classified as Minor — typically manageable. Sildenafil is a weak CYP3A4 substrate and minor inhibitor; co-administration with simvastatin produces a small increase in sildenafil exposure without clinically significant statin level changes in most patients.
What should I do if I'm prescribed both?
No routine dose adjustment is required; reassure patients but counsel about muscle symptoms and reconsider doses in elderly or hepatically impaired patients. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.