Immunostimulant herbs, also known as immunostimulators, are substances that stimulate the immune system by inducing activation or increasing activity of any of its components. Immunostimulants enhance or boost the body's natural defense against illness and disease. Herbs that stimulate the immune system are very important over a long period of time to help our bodies naturally fight off infections, colds and other viral inflammations.

Immunostimulant herbs with this ability include