These drugs mainly work by altering the transmission of nerve signals by the central nervous system so as to reduce the sense of hunger and increase the sense of fullness, or by blocking the absorption of nutrients in the gut.
這些藥物主要作用在中樞系統，藉著神經傳導物質的改變而減少飢餓感、增加飽食感，或者阻斷養分在腸道的吸收，藉此減少身體熱量的利用率而減輕體重。