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Quick summary

Type of medicine

Anthelmintic (Anti-parasitic)


Yes, generic versions are available

Active Ingredient


Effective within

Usually within 1-2 days

Works by

Paralyzing and expelling threadworms from the intestines

Side effects

Gastrointestinal symptoms (stomach pain, nausea, diarrhea), headache, dizziness

Medication details


Ovex Single Tablet is a medication designed to combat specific parasitic infections. The active ingredient in Ovex is mebendazole, which belongs to a class of drugs known as anthelmintics. This medication is primarily used to treat infestations of threadworms, which are common parasites that can affect both children and adults.

Threadworms, also known as pinworms, are small, white, thread-like worms that infest the intestines and can cause itching around the anus. Ovex works by paralyzing the threadworms, preventing them from absorbing essential nutrients, and ultimately leading to their expulsion from the body through bowel movements.


To ensure the effectiveness of Ovex Single Tablet, it is crucial to follow the recommended dosage and administration instructions:
Dosage: The standard dosage for Ovex is one tablet, which contains 100mg of mebendazole, taken as a single dose. For most patients, this is sufficient to treat the infection.
Age and Weight Considerations:
Adults and children over 2 years old: One tablet.
Children aged 6 months to 2 years: Half a tablet (50mg). Consult a healthcare professional for proper dosing in this age group.
Administration: Swallow the tablet whole with water, without chewing or crushing it. It can be taken with or without food, but taking it with a meal may help reduce stomach discomfort.
Repeat Dosing: In some cases, a second dose may be required after two weeks to ensure complete eradication of the infection. Follow the advice of your healthcare provider.


The active ingredient in Ovex Single Tablet is mebendazole. Inactive ingredients may include lactose, maize starch, sodium laurilsulfate, microcrystalline cellulose, sodium saccharin, magnesium stearate, cottonseed oil hydrogenated, orange flavor, and colloidal anhydrous silica. If you have known allergies or sensitivities to any of these ingredients, consult with a healthcare professional before using Ovex.

Side Effects

While Ovex Single Tablet is generally well-tolerated, like any medication, it may cause side effects in some individuals. Common side effects may include:
Gastrointestinal symptoms such as stomach pain, nausea, vomiting, and diarrhea.
Allergic reactions, though these are rare. Seek immediate medical attention if you experience signs of an allergic reaction, such as hives, difficulty breathing, or swelling of the face, lips, tongue, or throat.
It's important to note that the above list is not exhaustive. If you experience any unusual or severe side effects while taking Ovex, consult a healthcare professional for guidance.


Before using Ovex Single Tablet, consider the following important warnings:
Pregnancy and Breastfeeding: If you are pregnant, planning to become pregnant, or breastfeeding, consult a healthcare provider before using Ovex. The safety of mebendazole during pregnancy and breastfeeding is not well-established.
Liver or Kidney Disease: If you have a history of liver or kidney disease, inform your healthcare provider, as they may need to adjust your dosage or recommend an alternative treatment.
Allergies: If you have known allergies to mebendazole or any of the inactive ingredients in Ovex, avoid using this medication.
Interactions: Inform your healthcare provider of any other medications, supplements, or herbal products you are taking, as they may interact with Ovex and affect its effectiveness or safety.
Children Under 6 Months: Ovex is not recommended for children under 6 months of age. Consult a healthcare professional for alternative treatments in this age group.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on Oct 5, 2023, 2:45 pm

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Please read our FAQs page to find out more.

Is Ovex Single Tablet suitable for children of all ages?

Ovex Single Tablet is generally safe for children aged 2 and above. However, for children aged 6 months to 2 years, a different dosage (half a tablet) may be required. It's essential to consult with a healthcare professional for proper dosing in this age group.

Can I take Ovex Single Tablet if I have a known allergy to certain ingredients?

If you have known allergies to mebendazole or any of the inactive ingredients listed on the product label, it is advisable to avoid using Ovex. Allergic reactions can be serious, so always check the ingredients and consult a healthcare provider for alternative treatment options.

Are there any dietary restrictions while taking Ovex Single Tablet?

Ovex can be taken with or without food. However, if you experience stomach discomfort, taking it with a meal may help alleviate this symptom. There are no specific dietary restrictions associated with Ovex, but maintaining a balanced diet and good hygiene practices can help prevent reinfection with threadworms.

What should I do if I miss a dose of Ovex Single Tablet?

If you miss a dose of Ovex, take it as soon as you remember. However, if it's close to the time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you have questions or concerns about missed doses, consult with a healthcare provider.

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