There are many medicines to regulate menstruation. If a woman has irregular periods or does not have a period for some reason, she can take oral medicines to adjust her menstrual cycle and induce menstruation. Oral Chinese medicines can also be used to adjust the menstrual cycle, such as Kuntai capsule, Kunling pill and Gynecology menstruation capsule. In addition, western medicines such as estradiol valerate, progesterone, fentmorphone or Clomid can be used to regulate menstrual cycle. However, different medications should be used for menstrual cycle adjustment according to each woman’s condition. In case of perimenopause, Clomid can be given orally to regulate the menstrual cycle. If a woman is not menstruating due to premature ovarian failure, she can take Fentanyl to regulate her menstrual cycle.