Loading... Please wait...Yellow Dock (Rumex Crispus) is one of the best blood purifiers in the herb kingdom. It cleans the lymphatic system and tones the entire system. It has been used for: Amnesia, Boils, Cancer, Endurance, Gallbladder, Mental Fatigue, Rheumatism, Skin Problems, Liver, Congestion, Itching, Sores, Spleens and Swelling Ulcers.