The generic name of Yosemite is Drospirenone Ethinyl Estradiol Tablets II, which is usually required to be taken for two to three consecutive courses of treatment, under the supervision of a specialist. Drospirenone Ethinyl Estradiol Tablets II is a hormonal drug that can be used to regulate menstruation in women, and patients are generally required to take it at an identical time period every day. In case of missed or improper dosage, the therapeutic efficacy of the drug may be reduced. It is generally recommended that women start taking Drospirenone Ethinyl Estradiol Tablets II, Pink colored medication on the 1st day after the onset of menstruation for 24 consecutive days, and then take 1 white inactive tablet daily for the following 25 to 28 days. Adverse reactions to drospirenone ethinyl estradiol tablets II include irregular uterine bleeding, nausea, headache, and breast tenderness, and it is contraindicated in patients with impaired renal function, breastfeeding, and women during pregnancy. In addition, drospirenone ethinyl estradiol tablets II carries certain risks and should be used under the supervision of a medical specialist.