Named after its hook-like horns, cat's claw (Uncaria tomentosa) is a woody vine native to the Amazon rainforest and other tropical areas of South and Central America. Test tube studies indicate that cat's claw may stimulate the immune system, help relax the smooth muscles (such as the intestines), dilate blood vessels (helping lower blood pressure), and act as a diuretic (helping rid the body of excess water). It also has antioxidant properties, helping rid the body of particles known as free radicals that damage cells. Preliminary studies show it may have antitumor and anticancer effects as well.
Usage: Tea: 1 - 10 g (1,000 mg) root bark in 8 ounces water; boil 10 - 15 minutes, cool, and strain. Drink 1 cup 3 times daily.
Safety Precautions: Cat's claw may cause miscarriage and should not be taken by pregnant or nursing women. People with autoimmune diseases, skin grafts, tuberculosis, or those receiving organ transplants should not use cat's claw because of its possible effects on the immune system.
