This invention relates to the treatment of essential hypertension by administration of anti-hypertensive effective amounts of 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine-1-oxyl (tempol).
A mixed substance for treating hypertension, constipation, detoxification, boost immune system produced by extracting arctium lappa L., carrot, and whole radish with water one or two hours at temperature 70.degree. C. 100.degree. C. under agitating, separated the extracts and solid by-products, vacuum condensed the extracts, then at low temperature lyophilized condensed extracts to powder, encapsulated powder or pressed powder to tablet. Patient taking a daily dosage of this vegetable medicine have shown greatly improved healthy condition.