Mebendazole is a widely used antiparasitic medicine for intestinal worms like pinworm, roundworm, whipworm, and hookworm. It works by stopping the parasites from absorbing sugar, so they lose energy and die. People like it because it’s effective, usually short-course, and inexpensive. Below you’ll find practical dosing, safety tips, what to expect after treatment, and sensible advice on buying it.
For pinworm (Enterobius vermicularis): a single 100 mg chewable tablet for adults and children over 2 years is the usual dose. Many providers recommend repeating the single 100 mg dose after 2 weeks to prevent re-infection from eggs around the home.
For roundworm, hookworm, and whipworm: a common regimen is 100 mg twice a day for 3 days. Doses can vary by country and by the type of infection, so follow the label or your prescriber’s instructions. Don’t give mebendazole to children under 2 without medical advice, and always check age and weight rules on the product you buy.
Side effects are usually mild: stomach pain, diarrhea, or headache. Rare but serious reactions include allergic rash, fever, or signs of liver trouble (yellowing skin or dark urine). Stop the medicine and get medical help if you see severe symptoms.
Pregnancy and breastfeeding: mebendazole is generally avoided during early pregnancy. If you’re pregnant, try to confirm the diagnosis with a clinician and discuss safer timing or alternatives. Breastfeeding mothers should check with their doctor before using it.
Household steps matter: treat close contacts if recommended, wash bedding and underwear in hot water, vacuum carpets, and keep nails short. These simple steps cut the chance of reinfection more than medicine alone.
Buying tips: many countries require a prescription for mebendazole. When shopping online, pick a licensed pharmacy with HTTPS, clear contact info, and a registered pharmacist. Avoid sites that sell without prescription, offer suspiciously low prices, or lack product details. If in doubt, ask your local pharmacist or prescriber for a trustworthy source.
What to expect: symptoms may improve quickly, but eggs can persist in stool for days or weeks. If symptoms continue or return after treatment, see a clinician—different worms or resistant infections may need another approach.
Quick checklist before you take mebendazole: confirm the diagnosis, check the correct dose for age, watch for allergies, follow hygiene steps at home, and buy from a reputable pharmacy. If you’re unsure about dosing, pregnancy, or severe symptoms, contact a healthcare provider right away.
