Carbamazepine and Tacrolimus: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Carbamazepine and Tacrolimus unless specifically directed by your doctor.
How Carbamazepine interacts with Tacrolimus
Carbamazepine induces CYP3A4 and reduces tacrolimus exposure, risking subtherapeutic levels and transplant rejection.
What you should do
Avoid carbamazepine in transplant recipients; use levetiracetam or lamotrigine instead. If unavoidable, increase tacrolimus dose substantially with frequent trough monitoring.
Key facts
Severity
Major — avoid combination
Mechanism
Carbamazepine induces CYP3A4 and reduces tacrolimus exposure, risking subtherapeutic levels and transplant rejection.
Action
Avoid carbamazepine in transplant recipients; use levetiracetam or lamotrigine instead. If unavoidable, increase tacroli...
Frequently asked questions
Can I take Carbamazepine and Tacrolimus together?
No — this combination should generally be avoided. Avoid carbamazepine in transplant recipients; use levetiracetam or lamotrigine instead. If unavoidable, increase tacrolimus dose substantially with frequent trough monitoring.
What is the severity of this interaction?
The interaction between Carbamazepine and Tacrolimus is classified as Major — avoid combination. Carbamazepine induces CYP3A4 and reduces tacrolimus exposure, risking subtherapeutic levels and transplant rejection.
What should I do if I'm prescribed both?
Avoid carbamazepine in transplant recipients; use levetiracetam or lamotrigine instead. If unavoidable, increase tacrolimus dose substantially with frequent trough monitoring. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.