The abortion pill, also called a medical abortion, uses two drugs, mifepristone and misoprostol, to end an early pregnancy. It is FDA-approved for use through 10 weeks of gestation.
Although it seems convenient and private at home, the abortion pill works by triggering hormonal changes, uterine contractions, and vaginal bleeding. In recent years, expanded telehealth access and regulatory changes have increased national discussion about how the drugs are prescribed and monitored.
To explore your pregnancy options and receive medical guidance, find care near you.
Mifepristone: Blocking Progesterone
The first drug, mifepristone, blocks progesterone, a hormone essential to sustain early pregnancy.
Progesterone supports:
- The uterine lining
- Blood supply to the developing pregnancy
- Hormonal stability in early gestation
When progesterone receptors are blocked, the uterine lining begins to break down, and the pregnancy can no longer continue developing.
Some women experience vaginal bleeding, spotting, or mild cramping after taking mifepristone, while others notice little immediate change.
Misoprostol: Uterine Contractions and Bleeding
Misoprostol is taken one to two days later. It causes cramping and heavier vaginal bleeding that expels the fetus and related tissue.
Within several hours, many women experience:
- Intense cramping
- Heavy bleeding (often heavier than a typical period)
- Passage of blood clots and fetal tissue
- Nausea or vomiting
- Diarrhea
- Fever and chills
Bleeding often begins within several hours and typically starts within 24 hours. Lighter bleeding or spotting may continue for one to several weeks.
Gestational age matters: as pregnancy progresses, more tissue is passed, and symptoms may become more physically intense. A qualitative study conducted in Norway found that some women described the pain as “out of this world,” far beyond typical menstrual cramps, highlighting the wide variation in physical intensity among women.
Why Pre-Abortion Screening Matters
Before being prescribed the abortion pill, you should go over the following health details with a medical professional:
- Your pregnancy’s gestational age
- Pregnancy location (to rule out ectopic pregnancy)
- Medical history (including bleeding disorders or anemia)
- Current medications
- Rh factor status (if the abortion is beyond 12 weeks)
An ectopic pregnancy, where the embryo implants outside the uterus, cannot be treated with abortion pills and may cause life-threatening internal bleeding if undiagnosed.
When abortion pills are obtained without an ultrasound or in-person evaluation, providers may rely primarily on self-reported dates, which can increase the risk of inaccurate gestational dating or missed medical conditions or circumstances in which the abortion pill should not be used. Even where telehealth access is legal, confirming pregnancy location and gestational age provides important medical clarity.
The FDA also provides guidance on identifying unsafe or illegal online pharmacies.
When to Seek Immediate Care
While abdominal cramping and vaginal bleeding are expected, certain symptoms require urgent evaluation:
- Soaking two or more full-size pads per hour for two consecutive hours
- Blood clots larger than the size of a lemon
- Severe abdominal pain not relieved by medication
- Fever of 100.4°F (38°C) or higher lasting more than 24 hours
- Foul-smelling discharge
- Dizziness, weakness, or fainting
- No bleeding within 24 hours of taking misoprostol
Incomplete abortion or retained tissue requires medical treatment to prevent infection, severe bleeding, and sepsis.
A Thoughtful Approach to Care
Protecting your health begins with having accurate information and appropriate medical guidance. Confirming how far along you are, ensuring the pregnancy is located in the uterus, and reviewing your medical history with a qualified healthcare provider can help keep you safe. It’s also important to understand what symptoms are expected, when to seek care, and where to turn to if you have concerns.
To learn more, explore our educational blogs on the abortion pill and safety considerations. If you’re seeking medical guidance or personalized support, find care near you for confidential services free of charge.