Merck Manual

Please confirm that you are a health care professional

honeypot link
Professional Version

Nonspecific Immunotherapy in Animals


Ian Tizard

, BVMS, PhD, DACVM, Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University

Last full review/revision Jul 2020 | Content last modified Jul 2020

Under some circumstances it may be desirable to enhance the activity of an animal's immune system as a whole. This may include stimulation of the normal immune response to enhance protection or an effort to treat immunosuppressive conditions. Several types of immunostimulators have been used in veterinary medicine. They commonly contain microbial components such as mycobacterial cell walls or endotoxins, and many act by stimulating one or more toll-like receptors or related pattern recognition receptors.

quiz link

Test your knowledge

Take a Quiz!