Mebendazole (brand name Ovex) is the most commonly used treatment for threadworms in the UK. It is available to purchase over the counter from the pharmacy or maybe prescribed by your GP. The treatment is available in tablet or liquid form.

Treatment involves taking only one single dose of Mebendazole (Ovex), which will work to kill the live worms. It is important to treat all household members at the same time, including those without symptoms.

In the event where reinfection occurs, a second dose of Mebendazole may need to be taken 2 weeks after the first dose. As the medication does not kill unhatched eggs, it is essential to follow good hygiene measures during the infection and for a few weeks afterwards. This will reduce the chances of anyone getting re-infected.

Although all of our content is written and reviewed by healthcare professionals, it should not be substituted for or used as medical advice. If you have any questions about your health, please speak to your doctor.

Authored May 18, 2021 by Joseph Issac, MPharm
Reviewed Jun 15, 2021 by Prabjeet Saundh, MPharm