Efavirenz Phenobarbital 487

Clinical Bottom Line
Minimal data to guide interaction: risks likely to outweigh benefits
Drug 1
Drug 1 effect

Not studied (may decrease levels)

Drug 2
Drug 2 effect

Not studied

Clinical Effects

Decreased efavirenz effects

Management

Avoid combination and use alternative agents. If coadministering, monitor phenobarbital levels and adjust as indicated

Alternative Agents
Gabapentin Lamotrigine Tiagabine Topiramate
Import ID
487