Echinacea is thought to support the immune system by activating white blood cells. It may also increase production of interferon, an important part of the body's response to viral infections.
Goldenseal has been used successfully in the treatment of bacterial, fungal and protozoan infections. Goldenseal also has a long history of use as a gastronintestinal remedy especially for infectious diarrhea.
Cat's Claw is popular in South American folk medicine for treating intestinal complaints, gastric ulcers, arthritis, and to promote wound healing.