口服避孕药(OCs)周期—21d药物和7d间隔并不是——基于科学依据设计,而模仿女性月经周期,以确保OCs更容易被接受从而避免妊娠。然而,越来越多的证据表明,由于近几年激素剂量已被大幅度减少,有必要调整间隔期。标准的 Oral Contraceptives (OCs) Cycle - 21d Drugs and 7d intervals are not - Scientifically based designs that mimic the menstrual cycle to ensure that OCs are more readily accepted to avoid pregnancy. However, there is growing evidence that it is necessary to adjust the interval due to the significant reduction in hormone doses in recent years. standard