Butabarbital will lower the level or influence of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Carefully. The efficacy of hormonal contraceptives may very well be reduced. butabarbital will decrease the level or effect of lumefantrine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. ... https://chickk218yab2.vblogetin.com/profile