Mebendazole

Adults and children >2: 500 mg as a single dose, or 100 mg twice daily for 3 days for hookworm / whipworm.

Mild abdominal pain, diarrhea. Rare: hepatic enzyme elevation.

Children <2, pregnancy (first trimester), hypersensitivity.

Mebendazole irreversibly inhibits glucose uptake in parasitic worms. Vietnam routinely uses it for biannual deworming campaigns covering Ascaris, hookworm, pinworm, and whipworm.