Genestra - Cats Claw Tincture - 60 Millilitre(s) - NPN: 80048398 -- Used in Herbal Medicine to help relieve joint pain associated withosteoarthritis and rheumatism and to support the immune system. Source of antioxidants.Cats claw is a medicinal plant from the Amazon River basin that has been used for the treatment of chronic inflammation, including arthritis, by indigenous cultures for centuries.