Can You Take Amlodipine with Simvastatin?
Last reviewed: · Source: US FDA drug label database
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Amlodipine raises simvastatin levels — the FDA caps simvastatin at 20mg daily when combined with amlodipine to limit muscle-damage risk.
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Is it safe to take Amlodipine with Simvastatin?
Amlodipine moderately inhibits the enzyme that clears simvastatin, raising statin levels and with them the risk of muscle pain and, rarely, serious muscle breakdown (rhabdomyolysis). The official limit is simvastatin 20mg daily alongside amlodipine. Many prescribers simply switch to atorvastatin or rosuvastatin, which interact far less. If you're on simvastatin 40mg and amlodipine together, that warrants a medication review — not panic, but a conversation.
How do Amlodipine and Simvastatin interact?
Simvastatin is highly CYP3A4-dependent; amlodipine is a weak-to-moderate CYP3A4 inhibitor, roughly doubling simvastatin exposure. FDA labelling limits simvastatin to 20mg/day with amlodipine. Atorvastatin is less affected; rosuvastatin and pravastatin are essentially unaffected.
Data sourced from the US Food and Drug Administration (FDA) drug label database: FDA simvastatin dose-limitation guidance with amlodipine (2011 safety communication).
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Anyone on simvastatin above 20mg with amlodipine, the elderly, people with hypothyroidism or kidney impairment, and those also taking other CYP3A4 inhibitors (clarithromycin, grapefruit juice in quantity).
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What if I've already taken Amlodipine and Simvastatin?
Continue both but book a review if your simvastatin dose exceeds 20mg. Report muscle pain, tenderness, weakness or dark urine promptly. Switching to atorvastatin or rosuvastatin usually resolves the issue cleanly.
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Not sure if this combination is safe for your specific situation?
HealthLabs.com lets you check liver enzyme or kidney function levels before combining medications long-term — no GP referral needed.
Check your levels at HealthLabs →Always speak to your pharmacist or GP for personalised medical advice. Affiliate link — we may earn a commission.
Frequently Asked Questions
Can I take amlodipine and simvastatin together?
Yes at simvastatin doses up to 20mg daily. Higher doses need a review — often a switch to atorvastatin or rosuvastatin.
Why is there a 20mg simvastatin limit with amlodipine?
Amlodipine roughly doubles simvastatin levels. Capping at 20mg keeps exposure in the safe range.
Which statin works best with amlodipine?
Rosuvastatin and pravastatin have essentially no interaction; atorvastatin is only mildly affected. All are common alternatives.
What are the signs of statin muscle problems?
New muscle aching, tenderness or weakness — especially with fever or dark cola-coloured urine — needs prompt medical assessment.