Vermox is a medication that treats many ailments caused by worms.

Its main ingredient is mebendazole, which kills off worms and their eggs. If you become infected with worms — such as ringworm, whipworm, pinworm, or hookworm — you’ll usually be prescribed Vermox or its generic mebendazole.

Before taking these medications, it’s important to understand its side effects. For those with serious worm infections and those who are prescribed the pill for long periods, understanding the side effects becomes even more important.

Here’s a list of mebendazole side effects.

Gastrointestinal Disorders

This side effect causes severe issues in the stomach, and can even expand to your intestines.

Stomach pain, nausea, and vomiting are common side effects that don’t require medical attention. But mebendazole can cause serious gastrointestinal disorders.

Some examples of gastrointestinal disorders include ulcers and digestion issues.

Contact your doctor if you experience these symptoms while taking mebendazole:

  • Diarrhea
  • Heartburn
  • Weight loss
  • Ongoing vomiting
  • Severe abdominal pain
  • Blood in bowel movement

If you don’t visit a doctor for these symptoms, you could develop serious digestion issues. Continue taking mebendazole unless your doctor informs you to stop.

These symptoms could also be caused by the worm and infections, and not the medication.


A rash is a noticeable change in appearance and texture of your skin.

Rashes often leave your skin itchy, irritated, and even painful. When you develop a rash while on medication, this is usually the first sign you have an allergy to the medication.

If you develop a rash, contact the doctor immediately. They will usually instruct you to stop taking mebendazole, but don’t discontinue use until your doctor confirms you have an allergy to the medication.

A Headache

Headaches are a common symptom of various sicknesses and medications.

Often, people get headaches not related to their medication or illness. But if you’re not prone to headaches but are getting them while taking mebendazole, or get them more while taking mebendazole, inform your doctor.

A headache isn’t a common symptom of mebendazole, but it’s not reported to be a dangerous symptom. But if your headaches are frequent while on this medication, inform your doctor.


Dizziness is a common symptom of many medications but is one that shouldn’t be ignored. Dizziness is a common symptom of mebendazole, and it’s not a severe symptom.

Certain factors contribute to dizziness. These include age (kids and seniors are at risk), gender, interference with other medications, and have certain health issues.

Always inform your doctor of current health issues and the medications you’re taking.

Now You Know Vermox Symptoms

Obtaining a worm infection is terrifying. Walking in your garden or eating a meal can cause a severe worm infestation.

Fortunately, medications such as mebendazole kill off the worm and its eggs. As with every type of medication, mebendazole has its side effects. Make sure you know what to expect in case your body doesn’t handle mebendazole well.

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