Mebendazole is a widely used antiparasitic medication designed to treat intestinal worm infections such as pinworms, roundworms, hookworms, and whipworms. It works by blocking the worms’ ability to absorb sugar, which eventually causes them to die and be expelled from the body through natural bowel movements.
One of the most common questions people have is, “How fast does mebendazole work?” In most cases, mebendazole begins working within 24 to 72 hours after taking a single dose. For minor infections like pinworms, a single 100 mg dose is usually sufficient, and symptoms such as itching around the anus often improve within a few days. For more stubborn or multiple worm infections, your doctor may prescribe the medication to be taken twice daily for three consecutive days.
Even though Mebendazole OTC acts quickly to kill the parasites, it’s important to complete the full course of treatment if recommended. In some cases, especially with pinworms, a second dose may be needed after two weeks to prevent reinfection. Maintaining good hygiene practices during this period is essential to avoid spreading or reintroducing the infection.
Most users tolerate mebendazole well, with minimal side effects like stomach pain, diarrhea, or gas. It’s also considered safe for both adults and children over two years old.
In summary, mebendazole works fast—typically within a few days— and is highly effective when taken correctly. If symptoms persist or worsen after treatment, consult your healthcare provider for further evaluation or alternative options.
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