extended cycle birth control

1. Introduction and Mechanism of Action for Introvale Introvale is a highly effective, extended-cycle combination oral contraceptive designed to prevent pregnancy and alter the natural menstrual cycle. The active pharmaceutical ingredients are levonorgestrel, a synthetic progestin, and ethinyl estradiol, a synthetic estrogen. This specific formulation provides a continuous active hormonal regimen for eighty-four consecutive days, … Read more