Mebendazole Repeat Dosing for Pinworm Infection (Enterobiasis)
A repeat dose of mebendazole for pinworm (Enterobius vermicularis) infection should be given two weeks (14 days) after the first dose. [1]
This repeat-dose interval is recommended to address newly hatched worms after the initial treatment. [1]
Recommended Repeat Interval
- Second dose timing: 14 days after the first mebendazole dose. [1]
- Repeat-dose rationale used in guidance: reinfection and newly hatched worms occur after the first dose, so treatment is repeated after two weeks. [1]
Dose-Repeat Interval Not Recommended as 10 Days
- A 10-day repeat interval is not the standard timing in major patient-care guidance for enterobiasis treatment with mebendazole. [1]
Household/Contact Treatment Considerations
- Reinfection prevention guidance includes treating the infected person and close contacts/caretakers at the same time and following prevention measures for two weeks after the last treatment dose. [2]
Source-Consistent Timing Across Common References
- CDC guidance states that the treatment involves two doses with the second dose given two weeks after the first dose. [1]
- NHS guidance similarly indicates a repeat dose after 2 weeks. [3]