Side Effects Of Plan B

Side Effects Of Plan B
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So the condom broke and you're not on the Pill. Your move: Run out to CVS and pick up some Plan B . (TG it's over-the-counter now, right?)
But if you've never taken emergency contraception before, you might be wondering: Does this stuff have any side effects?
“Plan B contains a type of progesterone, the same steroid hormone that’s in oral contraceptives, but at a higher dose,” says Iffath Hoskins , M.D., clinical associate professor in the department of obstetrics and gynecology at NYU Langone Health. “It works by one or all of the following ways: delaying ovulation , preventing fertilization, and/or preventing egg implantation.” (Reminder: Plan B is not the abortion pill . It prevents pregnancy from occurring in the first place; it does not terminate an existing pregnancy.)
Though Plan B is generally considered very safe (especially compared to an unplanned pregnancy ...), that high dose of progesterone may cause a few potential side effects.
Here's are the Plan B side effects you should know about:
Taking Plan B can cause your period to be lighter or heavier, or arrive earlier or come late. “These side effects are due to the high-dose progesterone acting on the lining of the uterus at variable points in time during the menstrual cycle ,” says Hoskins.
How it affects your cycle depends on where exactly you are in your cycle when you take it. And while it may cause changes, “these are always temporary, especially when the pill is used correctly, i.e. very rarely/occasionally and not regularly and repeatedly,” she says.
Your next period should be normal, and come at the expected time, or within a week of the expected time.
One unpleasant side effect of the morning-after pill is that queasy, upset-stomach feeling. “Again, this is due to the pill having a high dose of progesterone,” says Hoskins.
That extra influx of hormones can throw your body out of whack for a bit, until it gets used to the higher level. “In general, it’s mild to moderate but like most everything else in medicine, there may be a few instances of severe, unremitting nausea and vomiting. In those cases, you should seek medical attention,” she says.
Also, if you throw up within two hours of taking Plan B, the medication may not have been fully absorbed into you system. You should call your doctor to see if you need to repeat the dose.
If you’re feeling lightheaded or dizzy after taking Plan B, don’t immediately freak out. “The usual underlying cause here is that progesterone causes relaxation of the muscle cells in the blood vessels; therefore, the blood tends to pool in the blood vessels of the lower extremities, resulting in less blood flowing to the head,” says Hoskins. “That can cause dizziness and lightheadedness.” Again, this should be temporary, so if it’s persistent, call your doc.
Ah, we can never get away from cramps , can we? “Progesterone affects uterine musculature, so mild to moderate cramps can occur,” says Hoskins. The usual over-the-counter meds that you might take for menstrual cramps can help alleviate these. “But anytime the pain is ‘severe'—whatever level of pain that causes you to double over—and/or is associated with moderate to severe bleeding, you should seek medical care,” she adds.
Breast tenderness is also linked to Plan B. “This is actually just a known side effect of progesterone,” says Hoskins. “In a normal menstrual cycle, the second half has more progesterone in the blood, and breast tenderness and headaches are known to occur during this time.”
Considering the fact that Plan B comes with an extra dose of progesterone, it shouldn’t come as too much of a surprise if your chest feels sore or achy after taking the morning-after pill.
In the same way you may experience headaches during the second half of your menstrual cycle, this side effect could occur after taking Plan B. “Again, progesterone causes this symptom. It’s usually not severe and goes away over a few days,” says Hoskins. “But if the headache is severe, lasts several days, and/or is accompanied by visual changes, you should seek medical care.”
Who isn’t tired at some point during their menstrual cycle? Hormones are to blame for that, too, which is why you could experience that same feeling after taking Plan B. “Progesterone causes tiredness and a feeling of lethargy,” explains Hoskins. The feeling should be temporary, so indulge in a good nap or just ride it out for a couple days.

Plan B is safe and effective. Some women may experience side effects from taking Plan B; these side effects tend to be mild. Remember: Plan B doesn't stay in your body long term, and it contains levonorgestrel - the same ingredient found in many popular birth control pills.
Some women taking Plan B One-Step may have changes in their period, such as spotting or bleeding before their next period. If your period is more than a week late, it’s possible you might be pregnant. Get a pregnancy test and follow up with your healthcare professional.
If you vomit within 2 hours of taking Plan B, talk to your healthcare professional to find out if you should repeat the dose.
Plan B One‑Step is a registered trademark of Foundation Consumer Healthcare.
© 2022 Foundation Consumer Healthcare. This site is intended for US audiences only.
This and other links to websites that are not under the control of Foundation Consumer Healthcare LLC (“Foundation”) are provided for convenience of reference only and are not intended as an endorsement by Foundation of the organization or a warranty of any type regarding the information on the website. Foundation does not and cannot review all communications and materials posted or uploaded to other websites and is not responsible for the content of these communications and materials.
Remember: Plan B must be taken within 72 hours of unprotected sex. If you need it right away, find a store near you .
Plan B is available for same day delivery, curbside pickup, and standard shipping via major retailers.

Plan B

Generic Name: levonorgestrel emergency contraception, morning after pill Brand Name: Plan B
Drug Class: Contraceptives, Oral

Medical Editor:

John P. Cunha, DO, FACOEP

Last updated on RxList: 5/31/2022

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Plan B(Levonorgestrel Emergency Contraception, Morning After Pill) side effects drug center

Plan B ( levonorgestrel , also known as the "Morning After Pill") is a female hormone that prevents ovulation used an emergency contraceptive to prevent pregnancy after unprotected sex or failure of other forms of birth control (such as condom breakage, or missing 2 or more birth control pills ). Plan B is available in generic form.
Common side effects of Plan B include:
Tell your doctor right away if you have any serious side effects of Plan B including:
One tablet of Plan B should be taken orally as soon as possible within 72 hours after unprotected intercourse. The second tablet should be taken 12 hours after the first dose.
Plan B may interact with rifampin, barbiturates , or seizure medicines. Other drugs may affect Plan B emergency contraceptive. Tell your doctor all prescription and over-the-counter medications you use.
Plan B should not be used during pregnancy. If you become pregnant or think you may be pregnant, inform your doctor immediately. This medication passes into breast milk. Though there have been no reports of harm to nursing infants, consult your doctor before breastfeeding.
Our Plan B (levonorgestrel) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Get emergency medical help if you have signs of an allergic reaction : hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor or seek emergency medical help if you have severe pain in your lower stomach or side. This could be a sign of a tubal pregnancy (a pregnancy that implants in the fallopian tube instead of the uterus). A tubal pregnancy is a medical emergency.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
A double-blind, controlled clinical trial in 1,955 evaluable women compared the efficacy and safety of Plan B (one 0.75 mg tablet of levonorgestrel taken within 72 hours of unprotected intercourse, and one tablet taken 12 hours later) to the Yuzpe regimen (two tablets each containing 0.25 mg levonorgestrel and 0.05 mg ethinyl estradiol , taken within 72 hours of intercourse, and two tablets taken 12 hours later).
The most common adverse events (>10%) in the clinical trial for women receiving Plan B included menstrual changes (26%), nausea (23%), abdominal pain (18%), fatigue (17%), headache (17%), dizziness (11%), and breast tenderness (11%). Table 1 lists those adverse
events that were reported in ≥5% of Plan B users.
Table 1: Adverse Events in ≥5% of Women, by % Frequency

The following adverse reactions have been identified during post-approval use of Plan B. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
© Plan B Patient Information is supplied by Cerner Multum, Inc. and Plan B Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.
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Copyright © 2022 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. See additional information .

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This article was medically reviewed by Julia Simon , MD, who is an assistant professor with the Department of Obstetrics and Gynecology at UChicago Medicine .

Our stories are reviewed by medical professionals to ensure you get the most accurate and useful information about your health and wellness. For more information, visit our medical review board.

Mary Sauer is a freelance writer for Insider.

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