In ancient times, duckweed symbolized the disappointments of life and officialdom. And duckweed has become a synonym for vagrancy. But you know what? Duckweed is also rich in efficacy and function, so what medical efficacy does duckweed have? What are the effects and contraindications of duckweed? Let's take a detailed look at it.
Efficacy and function of duckweed:
Sweating, dispelling wind, running water, clearing heat, detoxifying. It is used to treat febrile disease, impervious macular rash, wind heat addiction rash, skin itching, edema, dysmenorrhea, tinea, erysipelas and scald.
1. Protect cardiovascular system.
Qingping water extract has cardiotonic effect on frog heart failure caused by quinine. Calcium can enhance it. Large dose of Qingping water extract can make the heart stop diastolic period, and can contract blood vessels to raise blood pressure.
2. Antipyretic.
Qingping Decoction and its extract (2G / kg) were given orally to rabbits with fever caused by injection of typhoid mixed vaccine. It was proved that Qingping decoction had weak antipyretic effect.
3. Diuretic effect.
The diuretic components were potassium acetate and potassium chloride.
4. Divergent solution table.
The lung governs Qi, takes charge of breathing, combines skin and hair, opens the orifices in the nose, opens the water channel, and transports the bladder. It governs the surface of the body. If the pathogen invades the muscle surface, the muscle is blocked, the hair orifices are blocked, the lung qi is blocked, and the water channel is blocked, the Shangjiao Feiwei exterior syndrome can be seen clinically. "Differentiation of epidemic febrile diseases" says: "to treat the upper Jiao like a feather, we should not treat it lightly. This is one of the general principles of Wu Jutong in treating Shangjiao. Duckweed is pungent and cold in nature. It is light and loose. It is good at opening the orifices of hair, relieving sweating and evacuating wind heat. It is said that sweating is better than Ephedra in ancient times. It is a good product for sweating, resolving exterior and penetrating rash in the early stage of measles.
5. Use water to reduce swelling.
Water metabolism is closely related to the function of lung, spleen and kidney. The lung governs the distribution of body fluid, dredges water channels, and the spleen transports water and dampness; the transpiration and gasification of Shensi's water fluid cause dysfunction of the three organs, so it can cause the water fluid to stop gathering in the body and form edema. Duckweed is pungent and cold, which enters the lung and bladder meridian. It is mainly used to treat edema caused by dysfunction of lung treatment segment.
The edema treated by duckweed belongs to the Yang water of Fengshui flooding. It can eliminate the edema by using its functions of dispelling wind, clearing heat and promoting water.
6. Dispel wind and stop itching.
Duckweed can be used for rubella and pruritus syndrome: rubella and pruritus are caused by wind evil. There are two kinds of wind: external wind and internal wind. External wind is mainly caused by loose skin texture, exogenous wind heat or wind cold, or gastrointestinal damp heat and sympathetic wind evil. Internal wind is mainly caused by seven emotions, Qi and blood stagnation, weathering and dryness, and dystrophy of muscle. Duckweed is mainly used to treat rubella and skin pruritus caused by exogenous wind heat. Clinically, rubella is red, hot and itchy, with scratches all over the body, especially in case of wind and heat. In addition, wind heat syndrome can also be seen. Take duckweed cold nature, light qingtousan, Shufeng Qingre, fengqure San, rubella will disappear, itching will stop.
7. Identification and application.
Both ephedra and duckweed can promote lung qi, open hair orifices, channel water, sweat and urinate. However, ephedra is warm and pungent, which is suitable for the syndrome of exogenous wind and cold, exterior excess without sweat, and has the function of relieving asthma and cough; duckweed is cold and pungent, which is suitable for the syndrome of exogenous wind and heat, no sweat or adverse urination, and has the effect of dispelling wind.
8. Other functions.
The antibacterial and antimalarial tests of duckweed were negative. It can kill Culex pipiens larvae and pupae in laboratory and field.