Albendazole is used to treat infections caused by parasites (e.g., pinworm, hookworm, roundworm, and tapeworm). A methylcarbamate benzimidazole anthelmintic, it is In the same family of drugs as mebendazole, flubendazole, fenbendazole ("FenBen"), and oxfendazole. Albendazole works by keeping the parasite from absorbing sugar, thereby causing the parasite to lose energy and die.