Immunostimulants, also known as immunostimulators, are substances (drugs and nutrients) that stimulate the immune system by inducing activation or increasing activity of any of its components.
Imunostimulanti, imunostimulatori, su supstance (lekovi i hranljive materije) koje stimulišu imunski sistem podsticanjem (stimulacijom) ili povećanjem aktivnosti bilo koje komponente imunskog sistema.