Butabarbital will decrease the extent or influence of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Check Intently. The efficacy of hormonal contraceptives can be lessened. Liver condition—Use with warning. The effects might be amplified due to slower removal with the medicine from the body. close Rem... https://walto109flq5.vidublog.com/profile