This information from Lexicomp® explains what you need to know about this medication, including what it’s used for, how to take it, its side effects, and when to call your healthcare provider.
Aftera [OTC]; EContra EZ [OTC]; EContra One-Step [OTC]; My Choice [OTC]; My Way [OTC]; New Day [OTC]; Opcicon One-Step [OTC]; Plan B One-Step [OTC]; React [OTC]; Take Action [OTC]
- It is used to lower the chance of pregnancy after unprotected sex.
- If your child is allergic to this drug; any part of this drug; or any other drugs, foods, or substances. Tell the doctor about the allergy and what signs your child had.
If your child is pregnant:
- Do not give this drug to your child during pregnancy.
This drug may interact with other drugs or health problems.
Tell the doctor and pharmacist about all of your child’s drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe to give this drug with all of your child’s other drugs and health problems. Do not start, stop, or change the dose of any drug your child takes without checking with the doctor.
- Tell all of your child’s health care providers that your child is taking this drug. This includes your child’s doctors, nurses, pharmacists, and dentists.
- This drug will not end a pregnancy.
- This drug is not for frequent or regular use to prevent pregnancy. If you need to use emergency birth control often, talk with your doctor.
- This drug does not stop the spread of diseases like HIV or hepatitis that are passed through having sex. Be sure your child does not have any kind of sex without using a latex or polyurethane condom.
- Have your child use birth control to prevent pregnancy.
- Certain drugs or herbal products could cause this drug to not work as well. Be sure your child’s doctor and pharmacist know about all of your child’s drugs.
- If your child’s period is delayed for more than 7 days, talk with the doctor.
If your child is breast-feeding a baby:
- Tell the doctor if your child is breast-feeding a baby. You will need to talk about any risks to the baby.
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your child’s doctor or get medical help right away if your child has any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Very bad belly pain.
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your child’s doctor or get medical help if any of these side effects or any other side effects bother your child or do not go away:
- Upset stomach or throwing up.
- Breast soreness.
- Feeling dizzy, tired, or weak.
- Period (menstrual) changes.
- Stomach pain.
These are not all of the side effects that may occur. If you have questions about side effects, call your child’s doctor. Call your child’s doctor for medical advice about side effects.
You may report side effects to your national health agency.
Give this drug as ordered by your child’s doctor. Read all information given to you. Follow all instructions closely.
- Give this drug within 72 hours after unprotected sex. Give it as soon as you can.
- Tell your child’s doctor if your child throws up within 2 hours of taking an oral dose. Dose may need to be repeated.
- Call your child’s doctor to find out what to do.
- Do not give 2 doses at the same time or extra doses.
- Store at room temperature in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- If your child’s symptoms or health problems do not get better or if they become worse, call your child’s doctor.
- Do not share your child’s drug with others and do not give anyone else’s drug to your child.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
© 2022 UpToDate, Inc. and its affiliates and/or licensors. All rights reserved.