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Home > Drugs > Miscellaneous GI agents > Misoprostol
Miscellaneous GI agents

Misoprostol

https://themeditary.com/drug/misoprostol-6412.html
Medically Reviewed by Carmen Pope, BPharm TheMediTary.Com | Reviewed: Aug 13, 2023  Additional Content by TheMediTary.Com

Generic name: misoprostol [ mye-so-prah-stole ]

Drug class: Miscellaneous GI agents

Dosage form: oral tablet (100 mcg; 200 mcg)

Availability: Prescription only

Pregnancy & Lactation: Risk data available

Brand names: Cytotec

Contents
Uses Warnings Before Taking Dosage Side effects Interactions
  • Misoprostol (Misoprostol [ mye-so-prah-stole ])-Logo 100 4430-100 mcg-White-Round Misoprostol 100 mcg (Logo 100 4430)
  • Misoprostol (Misoprostol [ mye-so-prah-stole ])-Logo 200 4431-200 mcg-White-Round Misoprostol 200 mcg (Logo 200 4431)
  • Misoprostol (Misoprostol [ mye-so-prah-stole ])-G 5007-100 mcg-White-Round Misoprostol 100 mcg (G 5007)
  • Misoprostol (Misoprostol [ mye-so-prah-stole ])-G 5008-200 mcg-White-Six-sided Misoprostol 200 mcg (G 5008)
  • View all images

What is Misoprostol?

Misoprostol reduces stomach acid and helps protect the stomach lining from damage that can be caused by taking aspirin or a nonsteroidal anti-inflammatory drug (NSAID).

Misoprostol is a synthetic prostaglandin that works by "replacing" prostaglandins whose production is blocked by aspirin or NSAIDs. It is used to prevent stomach ulcers from developing during treatment with aspirin or an NSAID. Examples of NSAIDs include ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, and meloxicam.

Misoprostol is used in a hospital setting to induce cervical ripening, labor induction in women with premature rupture of membranes, and treatment of serious post-partum hemorrhage, These uses are outside of the approved indications.

Misoprostol is also used alone or in combination with mifepristone or methotrexate to end a pregnancy (abortion).

When used for non-pregnancy related conditions, misoprostol should not be used during pregnancy and if you are able to become pregnant, you will need to have a negative pregnancy test before starting this treatment.

Warnings

Misoprostol can cause birth defects, premature birth, uterine rupture, miscarriage, or incomplete miscarriage and dangerous uterine bleeding. Do not use misoprostol to prevent stomach ulcers if you are pregnant.

If you are able to become pregnant, you will need to have a negative pregnancy test before starting this treatment. You will also need to use effective birth control to prevent pregnancy during treatment.

How should I take Misoprostol

Take misoprostol exactly as prescribed by your doctor. Follow all directions on your prescription label and read all medication guides or instruction sheets.

Do not share misoprostol with another person, even if they have the same symptoms you have.

Misoprostol is usually taken four times a day with meals. The last dose of the day should be at bedtime. Follow your doctor's instructions.

You may have nausea, stomach cramps, or diarrhea while taking this medicine, especially during the first few weeks after you start taking misoprostol. These symptoms usually last for about a week.

Call your doctor if you have severe nausea, stomach pain, or diarrhea lasting longer than 8 days.

Store at room temperature away from moisture and heat.

Dosing information

Usual Adult Dose for Duodenal Ulcer:

200 mcg orally 4 times a day after meals and at bedtime
-Maintenance dose: 100 to 200 mcg orally 4 times a day

Usual Adult Dose for Gastric Ulcer:

200 mcg orally 4 times a day after meals and at bedtime
-Maintenance dose: 100 to 200 mcg orally 4 times a day

Comment: Treatment should be taken for the duration of non-steroidal anti-inflammatory drug (NSAID) therapy.

Use: Reducing the risk of NSAID-induced gastric ulcers in patients at high risk of complications from gastric ulcers (e.g., patients who are elderly, with concomitant debilitating disease) or at high risk of developing gastric ulceration (e.g., history of gastric ulcer)

Usual Adult Dose for NSAID-Induced Ulcer Prophylaxis:

200 mcg orally 4 times a day after meals and at bedtime
-Maintenance dose: 100 to 200 mcg orally 4 times a day

Comment: Treatment should be taken for the duration of non-steroidal anti-inflammatory drug (NSAID) therapy.

Use: Reducing the risk of NSAID-induced gastric ulcers in patients at high risk of complications from gastric ulcers (e.g., patients who are elderly, with concomitant debilitating disease) or at high risk of developing gastric ulceration (e.g., history of gastric ulcer)

Usual Adult Dose for for Labor Induction or Cervical Ripening:

American College of Obstetricians and Gynecologists (ACOG) Recommendations:
25 mcg vaginally every 3 to 6 hours
-Some patients may require doses of 50 mcg every 6 hours

Comments:
-The manufacturer states that use outside of the approved indication should be reserved for hospital use only.
-Some experts state that this drug is a more efficient method of labor (compared to oxytocin) in patients before 28 weeks' gestation.
-Higher doses may be associated with a higher risk of adverse events (e.g., uterine tachysystole with fetal heart rate decelerations).
-Use should be avoided during the third trimester or in patients with a history of cesarean delivery or major uterine surgery.

Use: Cervical ripening and labor induction in women with premature rupture of membranes

Usual Adult Dose for Postpartum Bleeding:

ACOG Recommendations:
800 to 1000 mcg rectally once

Use: Management of postpartum hemorrhage

International Federation of Gynecology Obstetrics (FIGO) Recommendations:
600 mcg orally OR 800 mcg sublingually once immediately after delivery

Comments:
-The manufacturer states that use outside of the approved indication should be reserved for hospital use only.
-Prior to administration of treatment, abdominal palpitation is recommended to confirm that there are no additional babies in utero.
-The dose is not based upon the patient's weight.
-The addition of this drug to oxytocin was not shown to provide additional benefit, but may increase the risk of adverse events.

Use: Prevention of postpartum hemorrhage in settings where oxytocin is not available

Usual Adult Dose for Abortion:

ACOG Recommendations:
First Trimester of Pregnancy:
-Early Pregnancy Loss: 800 mcg intravaginally once; a second dose may be given if there is no response to the first dose no sooner than 3 hours after the first dose, and usually within 7 days
-Incomplete Abortion: 600 mcg orally once
-Missed Abortion: 800 mcg intravaginally OR 600 mcg sublingually once; the dose may be repeated every 3 hours for 2 additional doses

Comments:
-Pain medications should be provided.
-Patients that are Rh(D) negative and unsensitized: Rh(D)-immune globulin should be given within 72 hours of administration of the initial dose.
-Follow-up treatment should be made within 7 to 14 days to ensure complete expulsion has occurred.
-If treatment fails, patients may opt for expectant management or suction curettage.

Use: Treatment of early pregnancy loss, incomplete abortion, or missed abortion

Detailed Misoprostol dosage information
Misoprostol Dosage information (more detail)

Before Taking

You should not use this medicine if you are allergic to misoprostol or other prostaglandins.

To make sure misoprostol is safe for you, tell your doctor if you have ever had:

  • inflammatory bowel disease (IBD) or other intestinal problems;

  • heart disease; or

  • if you are dehydrated.

May cause birth defects. Do not use if you are pregnant, unless misoprostol is beeing used for pregnancy related conditions. You must use effective birth control while using misoprostol and for at least 1 month after your last dose. Tell your doctor if you become pregnant.

You will need to have a negative pregnancy test before starting this treatment.

Stop taking this medicine and tell your doctor right away if you become pregnant during treatment.

Ask a doctor if it is safe to breastfeed while using this medicine.

Misoprostol pregnancy and breastfeeding warnings (more detail)

What happens if I miss a dose?

Take the missed dose of misoprostol as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and take only the next regularly scheduled dose. Do not take two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I know about storage and disposal of this medication?

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).

It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org

Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website (http://goo.gl/c4Rm4p) for more information if you do not have access to a take-back program.

What should I avoid while using Misoprostol?

Ask your doctor before using an antacid, and use only the type your doctor recommends. Some antacids can increase your risk of diarrhea while you are taking misoprostol.

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

Misoprostol side effects

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

Misoprostol may cause serious side effects. Call your doctor at once if you have:

  • severe ongoing stomach discomfort or diarrhea; or

  • dehydration--dizziness, confusion, feeling very thirsty, less urination.

Common misoprostol side effects may include:

  • diarrhea and stomach pain.

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

See more: Misoprostol Side Effects

What other drugs will affect Misoprostol?

Tell your doctor about all your other medicines, especially:

  • antacids.

This list is not complete. Other drugs may interact with misoprostol, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

What other information should I know?

Keep all appointments with your doctor.

Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

More about Misoprostol (Misoprostol [ mye-so-prah-stole ])

Dosage information
Misoprostol Side Effects
During pregnancy
Drug images
Side effects
Breastfeeding Warnings
Drug class: Miscellaneous GI agents

Related treatment guides

Duodenal Ulcer
Abortion
Gynecological Conditions
Cervical Ripening
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