Nature's Way Standardized Cat's Claw - 60 Capsules Nature's Way Cat's Claw extract is standardized to 4% alkaloids (measured as isoteropodine) from the bark of wild-harvested plants in Peru and Brazil. Cat's Claw is a popular South American folk medicine commonly used as a tonic to promote well-being. Nature's Way Standardized Cat's Claw extract is a technically advanced herbal product. Standardization assures specific, measurable levels of important compounds that provided beneficial activity in the body. It has been used for a variety of health conditions, including viral infections (such as herpes and HIV), Alzheimer's disease, cancer, and arthritis. About Nature's Way:America's leader in herbal medicine.If you've heard of Nature's Way, or better yet, used their products, it's not surprising. They have been America's leader in herbal medicine for over 40 years. As the pre-eminent provider of health and healing through the power of nature, their commitment to quality reflects their commitment to you. In fact, it's woven into the very story of their founding. A family crisis and an herbal renaissance.Nature's Way originated from a circumstance everyone can understanda family's desperate need to overcome a personal health crisis. Back in the late 1960s, Tom Murdock, the founder of what is now Nature's Way, needed a solution to help his gravely ill wife. After trying conventional medicine without success, Tom and his wife turned to the traditional Native American knowledge of medicinal plants growing in the Arizona desert. As a result, she recovered and lived an additional 25 years. Tom Murdock's pioneering spirit did more than save a lifeit led to the renaissance of herbal medicine in America. As word spread about his wife's recovery, Tom set out to find other healthy treasures growing in the Arizona desert. By 1969, Tom and his family had eight new herbal remedies to share with others and thus began the legacy of Nature's Way.