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Prepidil

Generic name: dinoprostone topical

Brand names: Cervidil, Prepidil, Prostin E2

Last updated November 3, 2026 0 views
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What is Prepidil?

Dinoprostone is a prostaglandin, which is a hormone-like substance that is naturally made by tissues in the body.

Prepidil is used in pregnant women to relax the muscles of the cervix (the opening of the uterus) to help prepare for inducing labor at the end of a pregnancy.

Prepidil may be used for reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

Warnings

You should not be treated with Prepidil if you are allergic to prostaglandins, have active genital herpes with a vaginal lesion, have placenta previa, or if your water has broken.

Make sure your doctor knows your complete pregnancy history, especially if you have ever had a C-section or major surgery on your uterus, if you have had a baby born in a breech position, or if you have had a difficult labor or delivery of a previous child.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use this medicine if you are allergic to prostaglandins, or if you have:

  • active genital herpes with a vaginal lesion;
  • placenta previa (the placenta is below the fetus in your uterus); or
  • if your water has broken.

Make sure your doctor knows your complete pregnancy history, especially:

  • if you have ever had a C-section or major surgery on your uterus;
  • if you have ever had a baby born in a breech position (not head-first); or
  • if you have ever had a difficult labor or delivery of a previous child.

Tell your doctor if you have ever had:

  • liver or kidney disease;
  • glaucoma;
  • asthma;
  • if you are 30 years or older; or
  • if your pregnancy is at full term (40 weeks).

Dinoprostone is not expected to harm the unborn baby when used to induce labor.

You should not breastfeed while you are being treated with Prepidil.

This section was rewritten for readability and reviewed for meaning.

Prepidil side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Tell your caregivers right away if your contractions slow down or become uneven, or if you have:

  • a light-headed feeling, like you might faint;
  • weak or shallow breathing;
  • intense pain between contractions;
  • sudden vaginal bleeding;
  • unexpected stomach pain;
  • chest pain;
  • easy bruising or unusual bleeding;
  • bleeding from a wound, surgical incision, or where an IV needle was placed; or
  • any bleeding that won't stop.

Common side effects of Prepidil may include:

  • contractions that happen more often;
  • slow heartbeats in the baby;
  • nausea or stomach pain;
  • feeling warm in the vaginal area;
  • back pain; or
  • fever.

This is not a complete list of side effects and others may happen. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

How is Prepidil given?

Dinoprostone is a gel or suppository that is placed directly onto the cervix through the vagina using a special applicator. A healthcare provider will insert Prepidil at the correct time best prepare your cervix.

Dinoprostone is usually given while you are lying on your back. Your doctor may use a vaginal speculum to view your cervix. This will help your doctor determine how much of this medication to use.

You will need to remain lying down for 15 to 30 minutes, and possibly for up to 2 hours, unless your doctor tells you otherwise.

Your contractions and your baby's heartbeat will be constantly monitored after you are treated with dinoprostone. Your doctor will also check your cervix frequently to determine how much it has dilated.

Prepidil can cause contractions to occur more often and they may also last longer.

If your uterus responds to dinoprostone, you may begin having regular uterine contractions within a few hours. You may also be given other medications to help stimulate your uterine contractions and make them more regular.

If your uterus does not respond to dinoprostone within 6 hours, your doctor may apply a second dose.

A Prepidil suppository is usually removed once you begin labor, or 12 hours after the medicine was inserted.

What happens if I miss a dose?

Since dinoprostone is used as needed in a clinical setting, it does not have a daily dosing schedule.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Since Prepidil is administered by a healthcare professional in a medical setting, an overdose is unlikely to happen.

Follow your doctor's instructions regarding any restrictions on food, drinks, or activities.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Prepidil?

Other drugs may affect dinoprostone, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

This section was rewritten for readability and reviewed for meaning.

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.