GI Chi contains the herbs Sanguisorba officinalis, Euphoria, Phellodendron amurense. Individually, each herb has separate gastrointestinal effects. Euphoria has been shown, in Chinese studies, to inhibit bacteria such as streptococcus, E. coli, spirillum, and may inhibit some parasites by blocking purine transferase. The herb Sanguisorba helps support control bleeding. It has anti-microbial effects.  The herb Phellodendron has antiseptic action against bacteria, yeasts, viruses and amoebas and has yielded a range of activity levels from mild suppression to potent action.  Its inhibition of giardia and candida are of particular interest by researchers right now.  Adult dose: 3 capsules - 3 times a day or as needed. 120 capsules - 500 mg