Immuboost is a natural cat and dog immune system supplement that contains a liquid extract of echinacea, one of the most important herbs in general use.

Echinacea is a flowering plant from the daisy family (Asteraceae) native to North America. 
Echinacea contains active compounds, such as polysaccharides, alkamides, and glycoproteins, which are believed to interact with the immune system by:
Increasing the production of cytokines (cell-signalling proteins) that help regulate immune responses.

Enhancing the activity of macrophages and natural killer (NK) cells, which are responsible for attacking harmful pathogens.
There are many benefits that come from giving your pet immune system supplements. For instance, they can achieve the following:
Strengthened natural defences
Protection against environmental stressors
Skin and coat health
Support during seasonal changes
Better quality of life