Medically reviewed by Alan Lucks | MD , Alan Lucks MDPC Private Practice - New York on February 5th, 2026. Updated on June 25th, 2026
Plan B typically remains effective for about four years from the manufacture date.
Expired emergency contraception may lose potency and become less effective at preventing pregnancy.
Always check the expiration date on the box and blister pack before using Plan B.
Proper storage at room temperature and away from heat, light, and humidity is crucial for maintaining medication integrity.
Yes, Plan B does expire. Most Plan B pills remain effective for about four years from the manufacture date, but using an expired pill may reduce its ability to prevent pregnancy. Checking the expiration date before you need it is one of the simplest steps you can take to stay protected.
Plan B, also known as the morning-after pill, contains levonorgestrel, a hormone that prevents pregnancy after unprotected sexual intercourse. While the medication is designed to be effective for several years, it's not immune to degradation over time.
Most Plan B medications have a standard shelf life of approximately four years from the manufacture date. However, this duration can vary slightly depending on the specific brand and manufacturing conditions. Birth control interactions with storage and environment can impact the medication's overall effectiveness.
Plan B does expire, and the expiration date printed on the packaging is the most reliable guide to whether your pill is still good. The FDA requires manufacturers to test and guarantee a medication's potency through that date, but not beyond it. Once a pill passes its expiration date, the active ingredient, levonorgestrel, may begin to break down, meaning the dose you take could be lower than what is needed to reliably delay or prevent ovulation.
For emergency contraception, timing and potency both matter. Plan B is most effective when taken within 72 hours of unprotected sex, and its effectiveness drops with each passing hour. An expired pill adds a second variable: reduced hormone concentration on top of a closing window. That combination makes using an expired Plan B a real risk, not just a theoretical one.
The expiration date is printed on the outer box and on the foil blister pack inside. Look for a label that reads "EXP" followed by a month and year. If you store Plan B in a medicine cabinet or emergency kit, check the date every few months so you are not caught off guard. A pill that expires this month is not one you want to rely on next month.
Yes. The four-year shelf life assumes the pill is stored under the conditions listed on the label: room temperature between 68 and 77 degrees Fahrenheit, away from direct light and humidity. Heat, moisture, and light all accelerate the breakdown of levonorgestrel. A pill stored in a hot car, a steamy bathroom, or a gym bag may degrade faster than the printed date suggests. If your pill has been exposed to extreme conditions, treat it as less reliable even if the expiration date has not passed yet.
Replace your Plan B if the expiration date has passed, if the pill looks discolored or crumbled, or if the packaging is damaged. Because Plan B is available over the counter without a prescription, replacing it is straightforward. Buying a new one before you need it, and storing it properly, gives you the most confidence that it will work when it counts.
Correct storage is critical for maintaining Plan B's effectiveness. Experts recommend:
Store at room temperature (68-77°F)
Keep away from direct sunlight
Avoid humid environments
Do not store in bathrooms or kitchens
Keep in original packaging
Identifying expired Plan B involves several key indicators:
Visible changes in pill appearance
Altered packaging condition
Past printed expiration date
Unusual smell or discoloration
Using expired Plan B can potentially:
Reduce pregnancy prevention effectiveness
Potentially compromise medication safety
Provide unreliable contraceptive protection
If your Plan B has expired, replace it as soon as possible. Plan B is available without a prescription at most pharmacies and retail stores. Many stores also carry generic levonorgestrel pills at a lower cost with the same active ingredient and the same shelf life. Having an unexpired backup on hand means you will not have to scramble in a time-sensitive situation, since Plan B works best when taken within 72 hours of unprotected sex.
Yes, Plan B does expire. Most Plan B pills carry an expiration date roughly four years from the manufacture date. Using an expired pill may reduce its effectiveness because the active ingredient, levonorgestrel, can break down over time. Always check the date on the box before use.
The shelf life of Plan B is approximately four years from the manufacture date under proper storage conditions. The exact date is printed on the outer packaging and the foil blister pack inside. Generic levonorgestrel pills carry the same shelf life as the brand-name product.
It is not recommended. The expiration date marks the end of the manufacturer's guarantee that the medication is at full potency. Even a pill that expired recently may have reduced levels of levonorgestrel, which could lower its ability to prevent pregnancy. If possible, get a new, unexpired pill before taking it.
Store Plan B at room temperature, between 68 and 77 degrees Fahrenheit, and keep it away from direct sunlight, heat, and humidity. Avoid storing it in bathrooms, kitchens, or cars where temperatures can fluctuate. Keeping it in its original packaging helps protect the pill from light and moisture.
Plan B and generic levonorgestrel pills are available over the counter at most pharmacies, grocery stores, and retail chains without a prescription. Generic versions contain the same active ingredient at the same dose and are typically less expensive. Having an unexpired supply on hand before you need it is the best approach.
Understanding Plan B's shelf life is crucial for effective emergency contraception. Always check expiration dates and store medications properly. Care you can trust. Doctronic is clinically validated with 99% treatment plan alignment.
Yes, Plan B does expire. Most Plan B pills remain effective for about four years from the manufacture date, but using an expired pill may reduce its ability to prevent [...]
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