Butabarbital will minimize the level or result of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Watch Closely. The efficacy of hormonal contraceptives could possibly be reduced. butabarbital will decrease the extent or effect of carvedilol by influencing hepatic enzyme CYP2C9/ten metabolism. Use Cau... https://camillaq231kqt9.blogoscience.com/profile