This comprehensive herbal formula provides a natural way to assist your pets health and deal with unwanted organisms in the GI (gastrointestinal) tract. In addition, GI CleanUp Gold is a safe and effective way to help keep the gastrointestinal tract "clean" and healthy. GI CleanUp Gold can assist the body's innate resistance to organisms in the GI tract. It can be used cyclically to enhance a pets likelihood of maintaining a normal GI tract free of undesirable intestinal parasites that can be commonly contracted by cats. GI CleanUp Gold contains no Wormwood (Artemisia absinthium) or Black Walnut (Juglans nigra). These ingredients are routinely added to intestinal worm formulas and can pose potential toxicity to your pet.