Nucleoside antiviral
Acyclovir with statins (atorvastatin, rosuvastatin, simvastatin)
Statins are among the most widely prescribed chronic medications, often used alongside many other agents including Acyclovir (Acyclovir). The combination at 200mg, 400mg, 800mg is generally safe, but a small number of statin-specific interactions matter — particularly for simvastatin, which shares CYP3A4 metabolism with several common medications.
How Acyclovir 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 Acyclovir acts on CYP3A4, the combination with simvastatin or atorvastatin can raise statin levels and increase muscle-related side effects. Acyclovir is a guanosine analogue selectively phosphorylated by viral thymidine kinase to its monophosphate form, then by cellular kinases to acyclovir triphosphate.
Practical guidance
According to the prescribing information for Acyclovir, anyone on a statin should mention it before starting Acyclovir at 200mg, 400mg, 800mg. The prescriber may switch the statin (e.g. from simvastatin to rosuvastatin) or adjust the statin dose during Acyclovir use. Persistent muscle pain, weakness or dark urine on the combination warrants prompt evaluation.
Frequently asked questions
Can I take Acyclovir with my statin? ▾
For most users at 200mg, 400mg, 800mg, yes — particularly with rosuvastatin or pravastatin which have minimal interactions with Acyclovir. Simvastatin and atorvastatin combinations may need a dose review by the prescriber to avoid amplified statin effects.
Will Acyclovir 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 Acyclovir at 200mg, 400mg, 800mg should be reported promptly so the prescriber can review the combination.
Products containing Acyclovir
More on Acyclovir
- With alcoholAcyclovir and alcohol — is it safe to drink?
- With foodShould Acyclovir be taken with food?
- Side effectsAcyclovir side effects: common, rare and warning signs
- Dosage guideAcyclovir dosage guide: how much to take and when
- OnsetHow fast does Acyclovir start working?
- DurationHow long does Acyclovir last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.