The objectives of the Phase I study are to evaluate the safety and tolerance of increasing single oral doses of oxfendazole in healthy volunteers.The secondary objectives assess the pharmacokinetic profile of oxfendazole and assess the metabolism of oxfendazole. The description of agent used is single oral dose of an aqueous suspension of oxfendazole, a benzimidazole carbamate antiparasitic drug. Each new cohort will be dosed only after the two week safety data for the preceding group have been reviewed. If a clinically significant AE is observed, and if this event is drug-related the safety monitoring committee will be convened to determine whether the study should continue.