pentobarbital will reduce the level or influence of mavacamten by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated.pentobarbital decreases amounts of toremifene by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep an eye on. CYP3A4 inducers improve fee of toremifene metabolism, reducing the steady-conditi