Vermox Side Effects

Generic name: mebendazole

Medically reviewed by Drugs.com. Last updated on Jun 3, 2024.

Note: This document provides detailed information about Vermox Side Effects associated with mebendazole. Some dosage forms listed on this page may not apply specifically to the brand name Vermox.

Applies to mebendazole: oral tablet chewable.

Serious side effects of Vermox

Along with its needed effects, mebendazole (the active ingredient contained in Vermox) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking mebendazole:

Rare side effects

• black, tarry stools
• chills
• convulsions
• cough or hoarseness
• dark urine
• fever with or without chills
• general feeling of tiredness or weakness
• hives or welts, itching, or skin rash
• large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• light-colored stools
• lower back or side pain
• nausea and vomiting
• painful or difficult urination
• pale skin
• redness of the skin
• sore throat
• sores, ulcers, or white spots on the lips or in the mouth
• unusual bleeding or bruising
• unusual tiredness or weakness
• upper right abdominal or stomach pain
• yellow eyes and skin

Incidence not known

• blistering, peeling, or loosening of the skin
• diarrhea
• difficulty with swallowing
• dizziness
• fast heartbeat
• joint or muscle pain
• red skin lesions, often with a purple center
• red, irritated eyes
• tightness in the chest

Other side effects of Vermox

Some side effects of mebendazole may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Rare side effects

• abdominal or stomach pain or upset

Incidence not known

• bloated
• excess air or gas in the stomach or intestines
• full feeling
• hair loss or thinning of the hair
• loss of appetite
• passing gas
• weight loss

For healthcare professionals

Applies to mebendazole: compounding powder, oral tablet chewable.

General adverse events

At the recommended dose, this drug was generally well tolerated; however, patients with high parasitic burdens reported diarrhea and abdominal pain.^[Ref]

Gastrointestinal

• Common (1% to 10%): Abdominal pain
• Uncommon (0.1% to 1%): Abdominal discomfort, diarrhea, flatulence
• Frequency not reported: Nausea, vomiting^[Ref]

Dermatologic

• Rare (0.01% to 0.1%): Rash
• Frequency not reported: Pruritus
• Postmarketing reports: Toxic epidermal necrolysis, Stevens-Johnson syndrome, exanthema, alopecia, angioedema, urticaria^[Ref]

Metabolic

• Frequency not reported: Anorexia^[Ref]

Hepatic

• Frequency not reported: Transient changes in liver function tests, granulomatous hepatitis
• Postmarketing reports: Hepatitis, abnormal liver function tests^[Ref]

Hematologic

• Frequency not reported: Profound leukopenia, anemia, thrombocytopenia, pancytopenia
• Postmarketing reports: Agranulocytosis, neutropenia^[Ref]

Nervous system

• Frequency not reported: Weakness, drowsiness
• Postmarketing reports: Convulsions/seizures, dizziness^[Ref]

Renal

• Postmarketing reports: Glomerulonephritis^[Ref]

Other

• Frequency not reported: Chills, drug fever, flushing^[Ref]

Hypersensitivity

• Postmarketing reports: Hypersensitivity (including anaphylactic reaction, anaphylactoid reaction)^[Ref]

Further information

Vermox side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer