Used as an active metabolite of albendazole in the treatment of parasitic infections, particularly helminth infestations such as neurocysticercosis and echinococcosis. It contributes to the anthelmintic effect by inhibiting tubulin polymerization in susceptible parasites, leading to their immobilization and death. Due to its systemic presence after albendazole administration, it plays a critical role in the overall efficacy of the parent drug against tissue-dwelling larval stages.