Mebendazole is available
by prescription only. It is a chewable tablet given in two doses about 2 weeks
apart. The second treatment is needed to kill any
pinworms that have hatched after the first
How It Works
Mebendazole kills both immature worms and
adult pinworms over a period of 2 to 3 days. It does not kill pinworm
Why It Is Used
Mebendazole is used to treat pinworm
infections. It may also be used when infection persists after using pyrantel
pamoate (a nonprescription medicine).
Mebendazole should not be
taken by pregnant women, breast-feeding women, or children younger than 2 years
How Well It Works
Mebendazole is highly effective and
cures pinworm infections more than 90% of the time.1
Side effects are rare but may
See Drug Reference for a full list of side effects. (Drug
Reference is not available in all systems.)
What To Think About
Children younger than age 2 should
only take this medicine on the advice of a doctor.
and breast-feeding women should not take mebendazole without first consulting a
Dent AE, Kazura JW (2007). Enterobiasis (Enterobius vermicularis). In RM Kliegman et al., eds.,
Nelson Textbook of Pediatrics, 18th ed., pp. 1500–1501.
Philadelphia: Saunders Elsevier.
How this information was developed to help you make better health decisions.