preventive - noun

remedy that prevents or slows the course of an illness or disease

any obstruction that impedes or is burdensome

an agent or device intended to prevent conception

preventive - adjective

• tending to prevent or hinder
• preventing or contributing to the prevention of disease

preventive - thesaurus

contraceptive   encumbrance   hinderance   hindrance   hitch   incumbrance   interference   preventative   prophylactic