Tomorrow
Tomorrow is a brand-name emergency contraception medication containing the hormone levonorgestrel. It is designed to be taken as soon as possible after unprotected intercourse or contraceptive failure to help prevent an unintended pregnancy. This over-the-counter option is intended for use by women who need紧急避孕.
An emergency contraceptive pill taken after unprotected sex to help prevent pregnancy.
Key facts at a glance
- RxNorm
- 96797
- Generic
- Tomorrow
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Used to prevent pregnancy following unprotected sexual intercourse, contraceptive failure (such as a broken condom), or missed regular birth control pills. It is not intended for routine contraception and should not be used if pregnancy is already suspected.
Contains levonorgestrel, a synthetic progestin hormone. It primarily works by temporarily stopping or delaying ovulation. It may also thin the uterine lining and thicken cervical mucus to help prevent fertilization, though the exact mechanisms are not fully understood.
Most effective when taken as soon as possible after unprotected intercourse, ideally within 72 hours but can be used up to 120 hours. This medication does not terminate an existing pregnancy and is not effective if implantation has already occurred. Common side effects may include nausea, abdominal pain, fatigue, headache, and menstrual changes. Women should consult a healthcare provider if they have certain medical conditions or are taking other medications.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy