The medications used for abortion in the first month of pregnancy, if there is a gestational sac, are mifepristone and misoprostol tablets. Mifepristone works by helping the pregnancy sac to fall off from the uterine lining, while Misoprostol works by causing the uterus to contract and expel the pregnancy sac, which is the purpose of abortion. The two drugs have their own contraindications and should not be used on their own, but under the guidance of a doctor. 1. Mifepristone: It should be prohibited for those who have received long-term corticosteroid treatment, those who are allergic to the drug, or those who have heart, liver and kidney diseases, as well as those with adrenal cortical insufficiency and ectopic pregnancy. Adverse reactions such as nausea, vomiting, dizziness and abdominal pain can be seen after medication. 2. Misoprostol tablets: It is prohibited for those who are allergic to the ingredients of the drug, and there is a possibility of dizziness after taking the drug. Note that when you are one month pregnant, most people do not have a gestational sac yet and generally cannot have a medication abortion, there is a risk of abortion failure. If you have regular menstruation, the days of pregnancy are counted from the last menstruation, and the gestational sac has not yet developed to a certain stage when you are one month pregnant, you cannot do a medical abortion or abortion surgery at this time, you need to wait for another ten days for the gestational sac to develop and take shape before doing a medical abortion or abortion surgery.