Anthelmintic drug which is effective against intestinal nematodes (Ascaris lumbricoides, Enterobius vermiculaires, -pinworms-, Trichostrongylus spp, Ancylostoma or Necator -hookworms) and tissue nematodes. At latest update relevant published data were not found on excretion into breast milk. It is poorly absorbed from the gastrointestinal tract, reaching very low plasma concentrations (<0.04 micrograms / mL: Fasanmade 1994) and usually given on a single dose, so it will hardly reach a significant concentrations in breastmilk.Given its minimum absorption, it has been authorized to be used in young infants. WHO List of Essential Medicines 2002: compatible with breastfeeding.