Loop diuretic
Furosemide with statins (atorvastatin, rosuvastatin, simvastatin)
Statins are among the most widely prescribed chronic medications, often used alongside many other agents including Furosemide (Furosemide). The combination at 20mg, 40mg, 100mg is generally safe, but a small number of statin-specific interactions matter — particularly for simvastatin, which shares CYP3A4 metabolism with several common medications.
How Furosemide interacts with statins
Statins differ in their metabolic pathways: simvastatin and atorvastatin go through CYP3A4 most heavily; rosuvastatin and pravastatin take other routes and have fewer drug interactions. If Furosemide acts on CYP3A4, the combination with simvastatin or atorvastatin can raise statin levels and increase muscle-related side effects. Furosemide acts on the thick ascending limb of the loop of Henle in the kidney, where it inhibits the Na+/K+/2Cl- co-transporter (NKCC2).
Practical guidance
According to the prescribing information for Furosemide, anyone on a statin should mention it before starting Furosemide at 20mg, 40mg, 100mg. The prescriber may switch the statin (e.g. from simvastatin to rosuvastatin) or adjust the statin dose during Furosemide use. Persistent muscle pain, weakness or dark urine on the combination warrants prompt evaluation.
Frequently asked questions
Can I take Furosemide with my statin? ▾
For most users at 20mg, 40mg, 100mg, yes — particularly with rosuvastatin or pravastatin which have minimal interactions with Furosemide. Simvastatin and atorvastatin combinations may need a dose review by the prescriber to avoid amplified statin effects.
Will Furosemide cause muscle pain with my statin? ▾
Muscle pain is the most common statin side effect and can be amplified when combined with medications that raise statin plasma levels. Persistent or new muscle pain on Furosemide at 20mg, 40mg, 100mg should be reported promptly so the prescriber can review the combination.
Products containing Furosemide
More on Furosemide
- With alcoholFurosemide and alcohol — is it safe to drink?
- With foodShould Furosemide be taken with food?
- Side effectsFurosemide side effects: common, rare and warning signs
- Dosage guideFurosemide dosage guide: how much to take and when
- OnsetHow fast does Furosemide start working?
- DurationHow long does Furosemide last?
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