What If You Vomit After Taking the Abortion Pill?

Nausea and vomiting are two of the most common side effects of medication abortion, and for many people, they’re also the most frightening. If you’ve just thrown up after taking mifepristone or misoprostol, your first question is probably: did it still work?

The honest answer is: it depends on timing, and in most cases, it’s less serious than it feels in the moment. This guide walks through exactly what vomiting after the abortion pill means for mifepristone and for misoprostol, what to do next, and when it’s time to reach out to a provider. For a full walkthrough of the process itself, see our medication abortion guide.

Why Vomiting Happens After the Abortion Pill

Vomiting after the abortion pill isn’t unusual, and it doesn’t mean something has gone wrong with the process itself. A few things contribute to it:

• Pregnancy-related nausea. Many people are already dealing with morning sickness before they even start the medication.
• Mifepristone’s effect on hormones. As mifepristone blocks progesterone, some people notice stomach upset.
• Misoprostol’s effect on the digestive system. Misoprostol stimulates smooth muscle contractions — that’s exactly what makes it effective for the uterus, but it can also affect the stomach and intestines, leading to nausea, vomiting, or diarrhea.
• Pain and cramping. Strong cramps can trigger nausea on their own.

Knowing this helps put things in context: vomiting after mifepristone or vomiting after misoprostol is a known, common side effect — not a sign that your body is rejecting the medication or that the abortion is failing. It’s also common alongside other digestive symptoms; see our guides on nausea after abortion and diarrhea after misoprostol if you’re dealing with more than one symptom at once.

Vomiting After Mifepristone (the First Pill)

Mifepristone is taken by mouth and needs time to absorb into your bloodstream before it can do its job of blocking the hormone that supports the pregnancy. (For background on how this medication works on its own, see our mifepristone (RU-486) guide.)

The general timing guide:

• If you vomit within roughly 30–60 minutes of swallowing mifepristone, there’s a real chance it wasn’t fully absorbed, and a repeat dose may be recommended.
• If you vomit after that window has passed, the medication has typically already been absorbed, and no action is needed.

Because clinical guidance on the exact cutoff varies slightly between providers (some use 30 minutes, others up to an hour), the safest move is always to note the exact time you took the pill and the exact time you vomited, then contact your provider or the clinician who prescribed your medication so they can advise you based on your specific situation. If you’re still unclear on how the two medications work together, our guide on how to take mifepristone and misoprostol together breaks down the full sequence.

This is one of the most searched questions we see — “throwing up after taking mifepristone” and “does mifepristone cause vomiting” — and the short version is: yes, it’s a known side effect, and timing is what determines whether you need to do anything about it.

Vomiting After Misoprostol (the Second Pill)

Misoprostol is where the “how you took it” question matters most, because the rules are different depending on the route. If you want a deeper, misoprostol-only breakdown of this exact scenario, our dedicated page on vomiting after misoprostol covers it in more detail. For general expectations around this medication, see what to expect from misoprostol.

Buccal (in the cheek) or Sublingual (under the tongue)

These are the most common methods. The tablets are meant to dissolve against the inside of your cheek or under your tongue for about 30 minutes before you swallow whatever is left.

• If you vomit before the 30-minute mark, the medicine may not be fully absorbed yet, and you may need to repeat the dose.
• If you vomit after holding the tablets for the full 30 minutes, absorption has generally already happened, and you typically don’t need to take more.

If you can see and recover any undissolved tablet fragments after vomiting, some protocols allow you to rinse them and place them back in your cheek — but this should be confirmed with your provider rather than guessed at. See our buccal vs. vaginal misoprostol comparison for more on how each route affects absorption.

Vaginal Misoprostol

Vomiting is far less relevant here, because the medication is absorbed through the vaginal lining, not the digestive tract. If you vomit after using misoprostol vaginally, it generally does not affect how well the medication works.

Swallowed Misoprostol

If you swallowed the tablets directly rather than letting them dissolve, absorption happens more quickly through the stomach, so vomiting soon after swallowing is more likely to reduce the dose absorbed. As with the other routes, timing and provider guidance matter here — the same is true if you’ve simply missed a misoprostol dose for another reason.

What to Do If You Vomit After the Abortion Pill: Step by Step

1. Note the time. Write down when you took the pill and when you vomited.
2. Identify the route. Was it mifepristone or misoprostol? If misoprostol, was it buccal, sublingual, vaginal, or swallowed?
3. Check whether you’re inside or outside the relevant window (roughly 30–60 minutes, depending on the medication and route, as outlined above).
4. Contact your provider or telehealth clinician before taking any additional pills on your own. They can confirm whether a repeat dose is actually needed for your situation.
5. Don’t panic if it’s a single episode. One instance of vomiting, especially outside the absorption window, rarely changes the outcome.
6. Continue monitoring your symptoms — cramping and bleeding are expected next steps in the process.

If you haven’t started the process yet and want to plan around this risk in advance, our guide on the best time to take the abortion pill can help you choose timing that works with your schedule.

How to Reduce Nausea and Vomiting Before It Starts

Since nausea is so common with this process, a little preparation can go a long way:

• Ask about anti-nausea medication (an antiemetic) to take before your dose, especially if you already have pregnancy-related nausea or motion sickness.
• Avoid taking the pills on a completely empty stomach unless your provider instructs otherwise — a light snack beforehand can help for some people.
• Sip water slowly rather than drinking large amounts at once around the time of dosing.
• Rest in a comfortable position after taking misoprostol, since movement can worsen nausea for some people.
• Have a plan in place (know your timing, know who to call) so that if vomiting does happen, you’re not scrambling to figure out what to do.

When Vomiting Is a Sign to Call Your Provider

Occasional vomiting is expected. Reach out to your provider promptly if vomiting is paired with any of the following:

• Vomiting that is severe, repeated, or doesn’t let you keep down fluids at all
• Signs of dehydration (dizziness, very dark urine, extreme thirst)
• Fever over 100.4°F lasting more than 24 hours
• Severe abdominal pain not relieved by pain medication
• Heavy bleeding that soaks more than two pads an hour for two hours in a row
• Uncertainty about whether the pregnancy has ended

These symptoms don’t necessarily mean an emergency, but they do mean it’s time to talk to a clinician rather than wait it out.

How to Know If the Abortion Pill Still Worked

Vomiting on its own is not a reliable way to judge whether the medication worked. The clearest signs are the ones your provider will typically ask you to track: cramping, bleeding, and tissue passage in the days that follow, along with a follow-up pregnancy test or ultrasound if recommended. If you vomited and are unsure whether you need a repeat dose, that confirmation should come from your provider based on your specific timing — not from guessing. For more detail, see how to know if the abortion pill worked and 7 signs the abortion pill is working.

The Bottom Line

Vomiting after the abortion pill is common, and in most cases, it does not mean the medication failed. What matters is which pill, which method, and how much time had passed before you vomited. When in doubt, don’t guess or self-redose — a quick check-in with your provider gives you a clear, personalized answer instead of hours of worry.

FAQ Section

Does mifepristone cause vomiting?
Nausea and occasional vomiting are recognized side effects of mifepristone for some people. It doesn’t happen to everyone, and when it does, whether it affects the medication’s effectiveness depends on how much time passed before you vomited.

What if I vomit 30 minutes after taking misoprostol?
If you were holding buccal or sublingual misoprostol in place for the full 30 minutes before vomiting, the medication has generally already been absorbed. If vomiting happened before the 30-minute mark, contact your provider about whether a repeat dose is needed.

If I vomit after taking misoprostol, does it still work?
In many cases, yes — especially if enough time had passed for absorption. The method you used (buccal, sublingual, vaginal, or swallowed) and the exact timing both affect the answer, so it’s worth confirming with your provider rather than assuming either way.

Can I take anti-nausea medicine before the abortion pill?
Many providers can recommend or prescribe an antiemetic to take beforehand, particularly if you already have significant nausea. Ask your provider about this as part of your treatment plan.

How do I know if I need to take another dose after vomiting?
This depends on the specific medication, the route you used, and the exact timing of the vomiting relative to when you took the pill. Rather than redosing on your own, contact your provider with these details so they can advise you accurately.

Is vomiting after the abortion pill dangerous?
On its own, occasional vomiting is not dangerous. It becomes a concern if it’s severe, prevents you from keeping down fluids, or comes with symptoms like high fever, severe pain, or heavy bleeding — in which case you should contact your provider.