Vermox (Mebendazole) 100 mg Chewable Tablets

Vermox is the chewable, oral form of mebendazole, an anthelmintic medicine used to clear common intestinal worm infections. Each tablet contains 100 mg of mebendazole, and we offer packs of 90, 120, 180, 270, and 360 pills.

Overview: what Vermox is and what it treats

Mebendazole is a well-established anthelmintic medicine used to treat threadworm (pinworm) infection, as well as roundworm, whipworm, hookworm, and mixed infections involving more than one of these parasites. It binds to tubulin inside the worm's cells and disrupts the formation of microtubules needed for glucose uptake. Without an adequate energy supply, the worms die over the following days and are cleared from the bowel.

How Vermox is used

For threadworm, the standard approach is a single 100 mg dose. A pharmacist or doctor may advise repeating the dose after two weeks because mebendazole kills the worms but not their eggs. For roundworm, whipworm, hookworm, and mixed infections, the general regimen is 100 mg twice daily for three consecutive days. Follow the dosing schedule in the patient information leaflet or the instructions given by a pharmacist or GP, as the right course depends on the worm involved, age, previous treatment, and other individual circumstances.

The tablet can be chewed or swallowed whole and may be taken with or without food. For a young child who cannot chew or swallow it safely, the tablet may need to be crushed; ask a pharmacist or doctor for guidance and supervise administration. Laxatives and changes to diet are not normally needed. Hygiene measures such as washing hands, keeping nails short, cleaning bathroom surfaces, and laundering nightwear and bedding help reduce reinfection. When one person has threadworm, treatment may be advised for all eligible household members at the same time.

Onset and what to expect

Mebendazole starts acting after it is taken, but it can take several days to kill the worms. You may not see worms in the stools after treatment, and threadworm eggs are microscopic. Symptoms such as itching around the anus should improve as the infection clears, although persistent or returning symptoms require advice from a pharmacist or doctor.

When the type of worm matters

Not every digestive symptom is caused by threadworm, and mebendazole is not the preferred treatment for every parasite. Seek medical advice if the type of infection is uncertain, symptoms are severe, there is unexplained weight loss or blood in the stools, treatment has not worked, or the infection may have been acquired during travel. A clinician may recommend testing or a different anthelmintic when another parasite is suspected.

Strengths and pack options we offer

We stock Vermox exclusively as a 100 mg chewable tablet for oral use, in packs of 90, 120, 180, 270, and 360 pills. Every pack contains the same strength and dosage form; only the quantity changes. Select a quantity after considering the recommended regimen and the number of eligible people being treated. A larger pack does not mean that a longer course or a higher dose is appropriate, and unused tablets should not be used for repeated treatment without checking the leaflet or seeking professional advice.

Safety, interactions, and side effects

Vermox is generally well tolerated at standard doses. Abdominal pain is among the more commonly reported effects, while abdominal discomfort, diarrhoea, and flatulence can also occur. Hypersensitivity reactions are uncommon but possible, and anyone with known hypersensitivity to mebendazole or another ingredient in the tablet should not take it. Stop taking the medicine and seek urgent help for facial swelling, difficulty breathing, or a severe blistering or peeling rash.

Who should take particular care

Mebendazole is not recommended during pregnancy. Animal studies showed embryotoxic and teratogenic effects at high doses, so treatment for threadworm during pregnancy is usually deferred in favour of hygiene measures or discussed individually with a doctor or pharmacist. Mebendazole is poorly absorbed from the gut and only very small amounts appear in breast milk, but it should still be used with care while breastfeeding and only when clearly needed. Mebendazole 100 mg is established for children aged 2 years and over; use below this age requires particular benefit-risk consideration because convulsions have been reported in very young children.

Interactions

Mebendazole has few clinically significant interactions during the short courses used for common intestinal worm infections because little of the medicine is absorbed into the bloodstream. Concurrent use with metronidazole is generally avoided, as this combination has been linked to rare but serious skin reactions. Cimetidine can reduce the breakdown of mebendazole and increase its concentration in the blood, particularly during prolonged or high-dose treatment. Tell a pharmacist or doctor about all regular medicines before starting treatment.

Monitoring and when to seek advice

Routine blood tests are not normally required for a standard short course. Prolonged or high-dose treatment is different and may require medical supervision, liver-function tests, and blood counts because rare liver inflammation and blood-cell disorders have been reported. Contact a doctor promptly if treatment is followed by yellowing of the skin or eyes, dark urine, unusual tiredness, unexplained bruising, fever, or a persistent sore throat. Suspected side effects can also be reported through the MHRA Yellow Card Scheme.

Storage

Vermox tablets should be stored at 20°C to 25°C, with occasional excursions between 15°C and 30°C considered acceptable. Keep the tablets in their original packaging, protected from direct light and moisture, and out of the sight and reach of children.

Ordering Vermox from us

We list Vermox 100 mg chewable tablets in packs of 90, 120, 180, 270, and 360 pills. In the UK, mebendazole 100 mg for threadworm can be supplied as a pharmacy medicine, and a pharmacist may advise whether it is suitable. Separately, under our ordering policy, we do not ask for a prescription to process an order for this product. Our pharmacist team is available by email, online chat, or phone if you would like advice about suitability or selecting a pack quantity based on the recommended regimen. We have operated since 2017, and orders are packed and dispatched for delivery across the UK.