Nature's Way Cat's Claw Bark - Helps to support the immune system and to relieve joint pain associated with osteoarthritis and rheumatism. Cat’s claw increases the white blood cell count in the body which then stimulates antioxidant action. It may help halt the spread of diseases and assist in eradicating bacterial infections and other pathogens. It may also help prevent wounds from being infected. People with leaky gut, irritable bowel syndrome and other digestive system disorders may find cat’s claw particularly useful, as it can help cleanse the digestive tract and ensure good gut flora. May help ease symptoms of viral infections, including shingles and cold sores.