Cats claw, also known as the Peruvian vine of life, thrives in the Amazon rainforest and other tropical areas of South and Central America. The vine-like plant grows up to 30 meters tall, climbing with the help of its thorns that resemble cats claws, hence the English name Cats Claw. The bark of this Peruvian vine variety is rich in alkaloid components that provide nutritional support for a healthy immune system. More specifically, Swanson Cats Claw offers you: A powerful plant-based antioxidant from the rainforests of Peru, containing alkaloid compounds Helps support a healthy immune system, digestive system and joint comfort Full Spectrum formula contains plant-based ingredients without unnecessary processing Dosage: Take two capsules daily with water.