What are the功效 and effects of purple-backed duckweed?

Spirodela polyrhiza (purple-backed duckweed) has the effect of promoting diuresis and reducing edema. It can enhance the functions of multiple organs such as the lungs, spleen, and kidneys, accelerate the metabolism of excess fluid in the body, prevent edema, and also possesses wind-dispelling and itch-relieving properties. It is highly effective in treating infections, wind-heat conditions, and skin itching. Additionally, it helps stabilize blood pressure, prevent hypertension, and maintain normal blood circulation. It contains chlorophyll and protein, which can nourish myocardial tissue and improve cardiac contractile function. Patients should use this herb under the professional guidance of a physician and must not self-medicate to avoid adverse reactions.