Common Brand Name(s): Vermox
Important: How To Use This Information
This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
Mebendazole is used to treat intestinal worm infections such as pinworm, roundworm, and hookworm.
This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
This drug may also be used for worm infections elsewhere in the body (e.g., trichinosis). In these cases, it is usually taken more often and for a longer time.
How To Use
Read the Patient Information Leaflet if available from your pharmacist before you start taking mebendazole and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
This medication is taken by mouth and can be taken with or without food. It may be chewed, swallowed whole, or crushed and mixed with food.
Dosage is based on your medical condition and response to therapy.
For treatment of pinworm infections, the medication is usually given as a single dose. If necessary, a second treatment may be given in a few weeks. For other types of common worm infections (e.g., roundworm, hookworm), take mebendazole by mouth for 3 days, usually twice a day in the morning and in the evening, or as directed by your doctor. If necessary, a second treatment may be given in a few weeks. For other types of infections, follow your doctor's directions. Your doctor may order you to take this medication more often than twice a day and for longer than 3 days.
It is very important to continue taking this medication exactly as prescribed by your doctor. Do not skip any doses. Continue to take this medication until the full prescribed amount is finished, even if symptoms disappear. Stopping the medication too early may result in a return of the infection.
Inform your doctor if your condition persists or worsens.
Stomach/abdominal pain, vomiting, diarrhea, headache, dizziness, or drowsiness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if any of these rare but very serious side effects occur:
- severe abdominal pain
- easy bleeding/bruising
- signs of serious infection (e.g., fever, persistent sore throat)
- unusual/extreme tiredness
- dark or pinkish urine
- yellowing eyes/skin
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before taking mebendazole, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Tell your doctor your medical history, especially of:
- low blood count (anemia)
- liver disease
- intestinal problems (e.g., Crohn's disease, ulcerative colitis)
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
This drug passes into breast milk. Consult your doctor before breast-feeding.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
A product that may interact with this drug is:
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
Do not share this medication with others.
If you are taking this medication for a long time, laboratory and/or medical tests (e.g., complete blood count, liver/kidney function tests) may be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
Pinworm infections can easily spread to others. All family members in close contact with the patient should be treated to decrease the chance of spreading the infection.
Practice strict hygiene to prevent another infection. Wash hands frequently, especially after using the bathroom. Disinfect toilets daily. Change and launder undergarments, towels, and bedclothes daily.
If you are taking more than one dose and miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Information last revised July 2018.
Copyright(c) 2018 First Databank, Inc.
Conditions of use: The information in this database is intended to supplement, not substitute for the expertise and judgment of healthcare professionals. The information in not intend to cover all possible uses, directions, precautions, drug interactions or adverse effects nor should it be construed in indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.