Thunderbrook Equestrian EquiCarbon is a specially processed blend of medicinal grade activated charcoal and human food grade mineral clays. Added to either feed or drinking water, EquiCarb has a much broader spectrum of toxin absorbency than just charcoal alone including bacterial endotoxins, certain pesticides, nitrates, chlorine, fluoride etc. Composition Activated Charcoal BPC 1934, Smectite Clays, Gums (Human food/Medicinal Grade)