The manufacturers predict that potent inducers of CYP3A4 such as 
carbamazepine may lower the 
serum levels of 
rimonabant. This is based on the fact that potent inhibitors of CYP3A4 increase 
rimonabant levels (see under azoles). 
 Caution is recommended with concurrent use of 
carbamazepine and 
rimonabant and patients should be monitored to ensure 
rimonabant remains effective.