Pentobarbital will decrease the extent or effect of nitrendipine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Insignificant/Importance Unfamiliar. pentobarbital will minimize the level or result of norgestrel by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Carefully. Reasonable CYP3A4 inducers might reduce progestin focus; consider usage... https://walesy841ghi0.bloggosite.com/profile