The abortion pill is actually two different medications taken in sequence to end an early pregnancy. The first, mifepristone, blocks progesterone, a hormone the body needs to sustain a pregnancy. The second, misoprostol, is taken 24 to 48 hours later and causes the uterus to contract and empty. Together, they are FDA-approved for ending a pregnancy through 10 weeks of gestation (70 days from the first day of your last period).
How the Two Medications Work
Mifepristone does the initial work by cutting off the pregnancy’s hormonal support. Progesterone thickens the uterine lining and maintains the conditions a pregnancy needs to grow. When mifepristone blocks that hormone, the pregnancy detaches from the uterine wall. On its own, mifepristone doesn’t cause significant cramping or bleeding for most people. That comes with the second pill.
Misoprostol triggers uterine contractions, similar to what happens during a miscarriage. It softens the cervix and causes the uterus to push out the pregnancy tissue. This is the step that produces the physical symptoms most people associate with a medication abortion: cramping, bleeding, and passing clots. Using both medications together is significantly more effective than using misoprostol alone. In studies comparing the two approaches for later gestational ages, combination regimens resulted in an ongoing pregnancy rate of just 2% at 48 hours, compared to 10% with misoprostol alone.
What the Process Looks Like
You take mifepristone first, usually as a single pill swallowed with water. Some people pick this up at a clinic, while others receive it by mail from a certified pharmacy. There are typically no noticeable effects from this first pill.
The second medication, misoprostol, is taken 24 to 48 hours later. It can be placed under the tongue, inside the cheek, or vaginally. Most people start to feel the effects one to four hours after this dose. Expect heavy cramping and bleeding with blood clots over the next several hours. The sensation is most comparable to strong period cramps, though the intensity varies from person to person. Some people also experience a low-grade fever, chills, nausea, diarrhea, or fatigue for about a day.
The heaviest bleeding typically occurs within the first several hours after taking misoprostol, then tapers over the following days. You can expect heavier bleeding for one to two days, with lighter bleeding gradually decreasing over two to three weeks. Some spotting or light bleeding can continue beyond that.
How Effective It Is
Within the FDA-approved window of 10 weeks, medication abortion is highly effective, completing the pregnancy in roughly 95% to 98% of cases. Effectiveness decreases at later gestational ages. Between 14 and 22 weeks, when used in clinical settings with repeated doses, success rates range from 78% to 98% depending on the specific protocol. The earlier in pregnancy you take the medication, the more likely it is to work without any additional intervention.
In the small percentage of cases where the medication doesn’t fully complete the process, a follow-up procedure may be needed to remove remaining tissue.
How You Get It
Mifepristone is regulated under a special FDA program called REMS (Risk Evaluation and Mitigation Strategy). This means it can only be prescribed by certified healthcare providers and dispensed either in person or through certified pharmacies. You cannot pick it up at a regular pharmacy counter. Certified pharmacies can ship mifepristone by mail using a tracked shipping service, which has expanded access for people in areas with fewer clinics.
State laws vary widely on medication abortion access. Some states have additional restrictions on telehealth prescribing, gestational limits, or mailing of the pills. The federal framework allows mail delivery, but your state’s rules may differ, so checking local regulations before starting the process is important.
Warning Signs to Watch For
Cramping and bleeding are expected and normal. But certain symptoms signal a potential complication that needs medical attention. Seek emergency care if you experience any of the following:
- Excessive bleeding: soaking through two thick menstrual pads per hour for two or more hours in a row
- Unmanageable pain: cramping that doesn’t respond to over-the-counter pain relievers like ibuprofen or acetaminophen
- Persistent fever: a temperature above 100.4°F (38°C) lasting more than four hours despite taking fever-reducing medication
These symptoms are uncommon but can indicate heavy blood loss or infection, both of which are treatable when addressed quickly.
Recovery and Follow-Up
According to World Health Organization guidelines, a routine follow-up visit is not medically necessary after an uncomplicated medication abortion. What matters more is knowing what to watch for. If you have no bleeding at all after taking both pills, prolonged heavy bleeding that doesn’t taper, or signs of an ongoing pregnancy (persistent nausea, breast tenderness), those are reasons to contact a provider.
If you do choose a follow-up appointment, a provider will typically check for signs of ongoing pregnancy, ask about any symptoms you’ve experienced, and discuss contraception if you want it. Some clinics offer a blood test or ultrasound to confirm completion, but these aren’t considered mandatory for everyone. Most people feel physically recovered within a few days, though bleeding may continue at a light level for several weeks. Fertility can return quickly, sometimes within two weeks, so contraception is worth considering early if you want to avoid another pregnancy.