Under some circumstances, it may be desirable to enhance the activity of an animal's immune system. This may include stimulation of the normal immune response to enhance protection and treatment of immunosuppressive conditions. Several types of immunostimulators have been used in veterinary medicine. They commonly contain microbial components, and many act by stimulating one or more toll-like receptors or related receptor systems.
Last full review/revision August 2013 by Ian Tizard, BVMS, PhD, DACVM; Susan L. Payne, PhD