butabarbital will minimize the extent or outcome of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Keep track of Intently. The efficacy of hormonal contraceptives may very well be minimized.butabarbital will lessen the extent or impact of glecaprevir/pibrentasvir by… Read More