Medically reviewed by Alan Lucks | MD , Alan Lucks MDPC Private Practice - New York on January 25th, 2026. Updated on June 25th, 2026
Both Aftera and Plan B contain identical 1.5mg levonorgestrel and work the same way.
Effectiveness peaks within 72 hours of unprotected intercourse and declines with each passing day.
Aftera offers a more affordable generic alternative, typically costing $20-$35 compared to $40-$60 for Plan B.
Both medications are available over the counter with no age restrictions and no prescription required.
Aftera and Plan B are the same medication at different price points. Both contain 1.5mg of levonorgestrel and work identically to prevent pregnancy after unprotected sex. The main difference is cost: Aftera runs $20-$35, while Plan B typically costs $40-$60. Both are available over the counter with no prescription or age restriction needed.
Emergency contraceptive pills work by preventing ovulation and disrupting potential fertilization. Both Aftera and Plan B utilize levonorgestrel, a synthetic hormone that effectively blocks pregnancy when taken promptly after unprotected intercourse.
The effects and management of reproductive health decisions require careful consideration. These medications are most effective when consumed within 24-72 hours, with success rates declining as time passes.
Plan B typically ranges from $40-$60, while Aftera offers a more budget-friendly $20-$35 option. Both are available over-the-counter, eliminating prescription requirements and age restrictions.
Women considering emergency contraception should understand potential side effects. Common experiences include temporary symptoms like anxiety and mood fluctuations such as:
Mild nausea
Fatigue
Headaches
Menstrual cycle disruptions
Cramping
Emergency contraceptives prevent approximately 7-8 potential pregnancies out of 8 when taken within recommended timeframes. Factors like body weight and concurrent medications can influence effectiveness.
Some women may experience stress related to reproductive health decisions , making professional guidance valuable.
Certain medications can reduce emergency contraceptive effectiveness. Women taking seizure medications or herbal supplements like St. John's Wort should speak with a doctor about potential interactions before relying on levonorgestrel-based pills.
When people search "Aftera Plan B," they are usually asking a straightforward question: are these two pills really the same thing, and which one should they take? The short answer is yes, they are therapeutically identical. Aftera is an FDA-approved generic version of Plan B, and both deliver the same 1.5mg dose of levonorgestrel in a single tablet.
Levonorgestrel works primarily by delaying or preventing ovulation. If an egg has not yet been released, the hormone prevents the surge that would normally trigger release. Without ovulation, fertilization cannot occur. Neither Aftera nor Plan B can end an established pregnancy, and neither functions as an abortion pill.
Timing is the single most important factor. Both pills are most effective when taken as soon as possible after unprotected sex. Studies show effectiveness is highest within the first 24 hours and decreases with each passing day. Both medications are approved for use up to 72 hours after unprotected intercourse, though some guidance extends that window to 120 hours with reduced effectiveness.
Research suggests that levonorgestrel-based pills, including both Aftera and Plan B, may be less effective for people with a higher body weight. If this is a concern, a copper IUD inserted within 5 days of unprotected sex is the most effective emergency contraception option regardless of body weight, with a failure rate of less than 1 percent. A healthcare provider can help determine the best option.
For most people, the choice comes down to what is on the shelf and what fits the budget. Aftera and Plan B are stocked at major pharmacies including CVS, Walgreens, and Walmart. If one brand is out of stock, the other is a fully interchangeable substitute. There is no clinical reason to prefer Plan B over Aftera or vice versa. Choosing Aftera can save $20 or more with no trade-off in safety or efficacy.
Yes. Aftera and Plan B both contain 1.5mg of levonorgestrel and are FDA-approved to work the same way. Aftera is a generic version of Plan B. The only meaningful difference between them is price.
Both pills are most effective when taken within 24 hours and are approved for use up to 72 hours after unprotected sex. Effectiveness decreases the longer you wait, so taking either pill as soon as possible gives the best results.
No. Both are intended for emergency use only and are significantly less effective than regular contraceptive methods like the pill, patch, or IUD. Using them frequently also increases the likelihood of side effects like irregular periods and nausea.
No. Levonorgestrel-based pills like Aftera and Plan B prevent pregnancy by delaying ovulation. They do not affect an existing pregnancy and are not abortion pills. If you are already pregnant, these medications will not be effective.
Both are available over the counter at most major pharmacies, including CVS, Walgreens, Walmart, and Rite Aid, as well as many grocery store pharmacies. No prescription or ID is required for either brand.
Care you can trust. Doctronic is clinically validated with 99% treatment plan alignment.
Aftera and Plan B are the same medication at different price points. Both contain 1.5mg of levonorgestrel and work identically to prevent pregnancy after unprotected sex. The [...]
Read More
Join 50,000+ readers using Doctronic to understand symptoms, medications,
and next steps.
Add your phone number below to get health updates and exclusive VIP offers.
By providing your phone number, you agree to receive SMS updates from Company. Message and data rates may apply. Reply “STOP” to opt-out anytime. Read our Privacy Policy and Terms of Service for more details.
Save your consults. Talk with licensed doctors and manage your health history.
