cenobamate will lower the level or impact of fentanyl transdermal by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Keep track of Carefully. Increase dose of CYP3A4 substrate, as wanted, when coadministered with cenobamate.Dispose of a utilized fentanyl patch by folding it above on itself (bringing the adhesive sides togeth