Plan B One-Step
- Generic Name: levonorgestrel tablet
- Brand Name: Plan B One-Step
- Drug Class: Contraceptives, Oral, Progestins
Drug Summary
What Is Plan B One-Step?
Plan B One-Step (levonorgestrel tablet) is a progestin-only emergency contraceptive used for prevention of pregnancy following unprotected intercourse or a known or suspected contraceptive failure. People sometimes call Plan B One-Step the "morning after pill." Plan B One-Step does not protect against sexually transmitted diseases.
What Are Side Effects of Plan B One-Step?
Common side effects of Plan B One-Step include
- nausea,
- vomiting,
- stomach or abdominal pain,
- diarrhea,
- dizziness,
- tired feeling,
- breast pain or tenderness,
- changes in your menstrual periods, or
- headache.
Dosage for Plan B One-Step
The recommended dosage of Plan B One-Step is one pill as soon as possible within 72 hours after unprotected intercourse or a known or suspected contraceptive failure.
What Drugs, Substances, or Supplements Interact with Plan B One-Step?
Plan B One-Step may interact with rifampin, barbiturates, or seizure medicines. Tell your doctor all medications and supplements you use. It can be used at any time during the menstrual cycle. If vomiting occurs within two hours of taking the tablet, consideration should be given to repeating the dose. Plan B One-Step should not be taken as regular birth control.
Plan B One-Step During Pregnancy or Breastfeeding
Do not take Plan B One-Step if you are already pregnant. Consult your doctor before breastfeeding.
Additional Information
Our Plan B One-Step (levonorgestrel tablet) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
FDA Drug Information
Warnings for Plan B One-Step
Allergy alert: Do not use if you have ever had an allergic reaction to Levonorgestrel
Sexually transmitted diseases (STDs ) alert: This product does not protect against HIV/AIDS or other STDs
Do not use
- if you are already pregnant (because it will not work)
- for regular birth control
When using this product you may have
- menstrual changes
- nausea
- lower stomach (abdominal) pain
- tiredness
- headache
- dizziness
- breast pain
- vomiting
Patient Information for Plan B One-Step
No information provided. Please refer to the WARNINGS section.
Last reviewed on RxList: 5/31/2022
This monograph has been modified to include the generic and brand name in many instances.