Properties and Uses:Alterative, diaphoretic, diuretic. Burdock is one of the best blood purifiers. It is used for chronic infection, arthritis, rheumatism, skin diseases (including psoriasis) and sciatica. It clears kidneys of excess wastes and uric acid. It is excellent for gout. Burdock has been known to reduce swelling and deposits within joints and knuckles of arthritis sufferers. Because it has digestive enzymes and bile stimulants, burdock will help eliminate the putrefying factor in the intestines.