Acyclovir and Tacrolimus: Drug Interaction Guide

Quick answer: This combination requires caution. Acyclovir and Tacrolimus can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Acyclovir interacts with Tacrolimus

Acyclovir and tacrolimus can both impair renal function, and reduced kidney function increases tacrolimus exposure and toxicity. The interaction is primarily additive nephrotoxicity rather than CYP-mediated.

What you should do

Monitor serum creatinine, tacrolimus trough concentrations, and urine output during combined therapy. Ensure appropriate acyclovir renal dose adjustment and hydration.

Key facts

Severity

Moderate — caution required

Mechanism

Acyclovir and tacrolimus can both impair renal function, and reduced kidney function increases tacrolimus exposure and t...

Action

Monitor serum creatinine, tacrolimus trough concentrations, and urine output during combined therapy. Ensure appropriate...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Acyclovir and Tacrolimus together?

With caution. Monitor serum creatinine, tacrolimus trough concentrations, and urine output during combined therapy. Ensure appropriate acyclovir renal dose adjustment and hydration.

What is the severity of this interaction?

The interaction between Acyclovir and Tacrolimus is classified as Moderate — caution required. Acyclovir and tacrolimus can both impair renal function, and reduced kidney function increases tacrolimus exposure and toxicity. The interaction is primarily additive nephrotoxicity rather than CYP-mediated.

What should I do if I'm prescribed both?

Monitor serum creatinine, tacrolimus trough concentrations, and urine output during combined therapy. Ensure appropriate acyclovir renal dose adjustment and hydration. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.