What Are Missed Period Pills?

If your period is late and you don't want to be pregnant, you may have heard about "missed period pills" or "late period pills." Here's what you need to know.

What Are Missed Period Pills?

Missed period pills are medications you can take when your period is late and you don't want to be pregnant. They bring on your period — and if you happen to be in the very early stages of pregnancy, they end it safely.

The key difference from a traditional abortion: you don't need to take a pregnancy test first. You simply take the medications when your period is late, and they cause cramping and bleeding that brings your period back.

Some people also call these "late period pills" or "menstrual regulation."

How Do They Work?

Missed period pills use the same FDA-approved medications used in medication abortion:

Mifepristone blocks progesterone, a hormone the body needs to sustain a pregnancy. Misoprostol, taken 24–48 hours later, causes the uterus to cramp and shed its lining.

Together, these medications are 95–98% effective at bringing on your period and ending a potential early pregnancy. They are safe to take whether or not you are actually pregnant. Learn more about how medication abortion works.

Why Would Someone Choose Missed Period Pills Instead of an Abortion?

There are several reasons people prefer this approach:

• You don't have to confirm a pregnancy. For many people, skipping the pregnancy test reduces stress and anxiety.
• You can act immediately. Instead of waiting days or weeks for a test and appointment, you can take action as soon as your period is late — sometimes within just a few days.
• It can feel less emotionally complicated. Because you never confirm whether you were pregnant, some people find this approach easier to process.
• It's the same safe medication. The pills and dosages are identical to what's used in medication abortion, which has been safely used by millions of people worldwide for over 25 years.

Are Missed Period Pills Safe?

Yes. Mifepristone and misoprostol have been used for decades and have an extensive safety record. They are FDA-approved and widely used around the world. Common side effects include:

• Cramping (this means the medication is working)
• Bleeding heavier than a normal period
• Nausea
• Mild fever or chills

These effects are temporary and expected. Serious complications are rare. Your provider will explain what to watch for and how to reach them if you have questions.

How Is This Different From Plan B?

Plan B (the morning-after pill) prevents pregnancy by delaying ovulation. It works best within 72 hours of unprotected sex and cannot end a pregnancy that has already started.

Missed period pills use different medications (mifepristone and misoprostol) and can end a very early pregnancy. They're taken when your period is already late — not right after sex. Read our full comparison of missed period pills vs. abortion pills.

Is This Legal?

People across the United States are safely accessing missed period pills through licensed healthcare providers and telehealth services. If you have questions about the legal landscape in your state, the If/When/How Repro Legal Helpline can provide guidance: 844-868-2812.

How Can I Get Missed Period Pills?

Missed period pills are available through telehealth — meaning you can complete a consultation online and have the medications delivered to your door in discreet packaging. Learn how to get missed period pills online.

At Roxy Clinic, we provide professional, private telehealth care to patients in 14 states. Our sliding-scale pricing starts at $0 and goes up to $150, so cost doesn't have to be a barrier. No in-person visit is needed.

This article is for informational purposes and is not a substitute for professional medical advice. If you have legal questions, contact the If/When/How Repro Legal Helpline at 844-868-2812.