Drugs that delay menstruation include progesterone, deprenyl tablets, ethinyl estradiol cyproterone tablets, etc. Improper administration of drugs can cause menstrual disorders, and it is best to take the drugs reasonably under the guidance of a doctor to achieve the effect of delaying menstruation. If you take drugs to delay menstruation, your period will come 3-5 days after you stop taking the drugs. If your period does not come more than a week after stopping the medication, you can consider the endocrine disorder caused by the medication. It is not recommended to break the menstrual cycle easily if the menstruation is regular, pay attention to strengthen the diet and nutrition during taking the drug, do not eat spicy and stimulating food, so as not to affect the effect of the drug, and observe the time of the next menstruation after taking the drug to delay the menstruation to avoid menstrual disorders.