Top of the page
Common Brand Name(s): Mifegymiso
This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
Rarely, serious medical problems can occur when a pregnancy ends (such as due to surgical abortion, miscarriage, medical abortion with medications including mifepristone), including serious infections and bleeding. You must see a health care professional within 7 to 14 days after taking mifepristone. The health care professional will check if your pregnancy has completely ended. If abortion does not occur or is not complete, or if there are serious medical problems, you may need surgery. If the medical abortion fails and the pregnancy continues until birth, there is a risk of birth defects.
You may have a very serious infection even if you do not have a fever. Get medical help right away if you have abdominal pain or feel sick (such as having nausea, vomiting, diarrhea, weakness) more than 24 hours after taking the second drug (misoprostol), even if you do not have a fever. Also get medical help right away if you have heavy bleeding that doesn't stop, which may be a sign of an incomplete abortion or other serious medical problem.
If you do not want to get pregnant after ending your pregnancy, you must start using birth control right away. Tell your health care professional if you want to get pregnant again right after the abortion. To decrease the chance of birth defects, avoid getting pregnant again before your next menstrual period.
This product is used to cause an abortion during the early part of a pregnancy. It is used up to 63 days after the first day of your last menstrual period. This product contains 2 medications: mifepristone and misoprostol. Mifepristone works by blocking a natural hormone (progesterone) that is needed for the pregnancy to continue. Misoprostol works by making the womb (uterus) contract and the opening of the cervix relax, which causes the contents in the womb to pass out of the body.
Mifepristone and misoprostol must not be used if you have a rare abnormal pregnancy that is outside the womb (ectopic pregnancy). In this case, abortion will not occur and the ectopic pregnancy may suddenly break, resulting in very serious bleeding.
See also Warning section.
Before treatment, your health care professional must make sure your pregnancy is not outside the womb (ectopic), and check how long you have been pregnant.
Read the Patient Information Leaflet provided by your health care professional before you start using this product. If you have any questions, ask your health care professional. Read and sign the consent form and Patient Information Card provided by your health care professional and keep the Patient Information Card with you while using this product and until your health care professional tells you that your abortion is complete.
Take mifepristone by mouth as directed by your health care professional, usually as a single dose. Swallow the mifepristone with a glass of water. After taking mifepristone, wait 24 to 48 hours, then take the misoprostol (as a single dose). To take the misoprostol, place the tablets between your cheeks and gums and allow to dissolve for 30 minutes. If there are still some tablet pieces left in your mouth after 30 minutes, swallow them with a glass of water. Plan to rest for 3 hours after taking the misoprostol tablets. The medications may not work as well if you take misoprostol sooner than 24 hours after taking mifepristone or later than 48 hours after taking mifepristone. Carefully follow your health care professional's directions. Heavy vaginal bleeding does not mean that an abortion is complete. Be sure you know who to call and what to do in case of emergency.
Avoid eating grapefruit or drinking grapefruit juice while using this medication unless your health care professional says you may do so safely. Grapefruit can increase the chance of side effects with mifepristone.
Breast tenderness, headache, nausea, vomiting, diarrhea, tiredness, or dizziness may occur. If nausea, vomiting, diarrhea, or weakness last longer than 24 hours after taking the second drug (misoprostol), get medical help right away.
Bleeding and cramping are expected during this treatment. Vaginal bleeding usually starts a few hours after taking the misoprostol. These symptoms usually mean the drugs are working. However, sometimes you can have cramps and bleeding and still be pregnant. You must keep all of your follow-up visits so your health care professional can check if abortion is complete.
Nausea and cramping may get worse in the first 24 hours after you take the second drug (misoprostol). Your health care professional may direct you to take other medication(s) to help with these symptoms. Bleeding and spotting usually last about 11 days and may be much heavier than a normal period. Rarely, this bleeding may need to be stopped by surgery. Get medical help right away if you bleed enough to soak through 2 thick, full-size sanitary pads each hour for 2 hours in a row, or if you are worried about heavy bleeding.
Remember that this product has been prescribed because your health care professional has judged that the benefit to you is greater than the risk of side effects. Many people using this product do not have serious side effects.
Get medical help right away if you have any very serious side effects, including:
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including:
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your health care professional.
In the US -
Call your health care professional for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your health care professional for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before taking this product, tell your health care professional if you are allergic to mifepristone or misoprostol; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your health care professional for more details.
Before using this medication, tell your health care professional your medical history, especially of:
This product may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your health care professional if you are using marijuana (cannabis).
If you are using an IUD (intrauterine birth control device), it should be removed before using this product.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Another pregnancy can occur after this treatment and before your normal period begins again. If you do not want to get pregnant after ending your pregnancy, you must start using birth control right away. To decrease the chance of birth defects, avoid getting pregnant again before your next menstrual period.
Mifepristone and misoprostol pass into breast milk. Consult your health care professional before breast-feeding.
See also How to Use section.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your health care professional. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug are:
Aspirin can increase the risk of bleeding when used with this medication. However, if your doctor has directed you to take low-dose aspirin for heart attack or stroke prevention (usually 81-162 milligrams a day), you should continue taking it unless your doctor instructs you otherwise. Ask your doctor or pharmacist for more details.
Other medications can affect the removal of mifepristone from your body, which may affect how mifepristone works. Examples include azole antifungals such as itraconazole/ketoconazole, macrolide antibiotics such as erythromycin, dexamethasone, rifamycins such as rifampin/rifabutin, St. John's wort, drugs used to treat seizures (such as carbamazepine, phenytoin), among others.
Mifepristone can slow down the removal of other medications from your body, which may affect how they work. Examples of affected drugs include cyclosporine, ergot alkaloids (such as dihydroergotamine, ergotamine), fentanyl, pimozide, quinidine, some statin drugs (such as fluvastatin, lovastatin, simvastatin), sirolimus, tacrolimus, warfarin, among others.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Alberta residents can call PADIS (Poison and Drug Information Service) 24 hours a day at 1-800-332-1414. Canada residents can call a provincial poison control center.
Lab and/or medical tests (such as ultrasound) must be done before you start taking this medication and after taking it. Keep all medical and lab appointments.
You must follow the dosing and appointment schedule as directed by your health care professional. Contact your health care professional right away if you forget to take the dose of misoprostol tablets and it is more than 48 hours after you have taken mifepristone. If you miss an appointment, contact your health care professional right away.
If you have questions about missing a dose or you don't have more medication, contact your healthcare provider or pharmacist.
Store at room temperature away from light and moisture. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Information last revised July 2021.
Copyright(c) 2021 First Databank, Inc.
Conditions of use: The information in this database is intended to supplement, not substitute for the expertise and judgment of healthcare professionals. The information in not intend to cover all possible uses, directions, precautions, drug interactions or adverse effects nor should it be construed in indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.