Evigrade
Moderate

Carbamazepine × Linezolid

Antiepileptics. Carboxamide derivatives×Oxazolidinone antibiotic

Mechanism

No direct pharmacokinetic interaction. Mild additive CNS depression and haematologic toxicity: linezolid myelosuppression plus carbamazepine's rare agranulocytosis- and thrombocytopaenia-inducing activity.

Symptoms

Fatigue, confusion, frequent infections (from leukopenia), bleeding (from thrombocytopenia). Symptoms develop with linezolid courses over 14 days.

Management

For short linezolid courses (10–14 days) on stable carbamazepine, no adjustment needed. Check CBC at one week and at course end. For long-term linezolid (over 14 days), weekly CBC. Antibiotic alternative if needed: vancomycin (no myelosuppression).

Sources

All interactions