How soon after taking Dydrogesterone tablets will menstruation occur?

The time it takes for menstruation to occur after taking dydrogesterone tablets varies among individuals, but generally occurs within 3 to 7 days after discontinuation. This period represents normal withdrawal bleeding following drug cessation, creating a phenomenon similar to a menstrual period. If the endometrium is relatively thin, it may take longer—usually within 10 days. It is important to ensure that the endometrial thickness is within an appropriate range before taking dydrogesterone tablets. Generally, a thickness of at least 8 mm is recommended to ensure the medication can effectively induce menstruation.

Dydrogesterone tablets are primarily used to treat conditions caused by insufficient endogenous progesterone, such as menstrual disorders and amenorrhea. The method and duration of administration should be determined according to the specific medical condition and physician's instructions. Do not discontinue or alter the dosage without medical advice. If menstruation does not occur within an extended period after stopping the medication, prompt medical evaluation is recommended.