This product is the whole herb of the perennial aquatic floating herb Spirodela polyrhiza (Spirodela polyrhiza (L.) Schleid.) from the Spirodela family, distributed throughout the country. It is collected in summer, impurities are removed, and it is dried for use.

bubble_chart Properties and Meridians

Acrid, cold. Act on lung and bladder meridians.

bubble_chart Efficacy

Inducing sweating to release the exterior, promoting eruption, relieving itching, unblocking water, and dispersing edema.

bubble_chart Indications

1. is used for the pattern of common cold due to wind and heat, fever without sweating. This product is pungent and cold in nature, light and floating upwards, with the functions of ventilating the lung to induce sweating and releasing the exterior with pungent-cool properties. Therefore, it can be used to treat the pattern of common cold due to wind and heat, fever without sweating, and can be combined with Schizonepeta, Mentha, Forsythia, etc.
2. It is used for measles that do not erupt and rubella cutaneous pruritus. This product releases the exterior with pungent-cool properties, disperses wind, and outthrusts rashes. It is used for measles that do not erupt, often combined with Mentha, Cicada Slough, and Niuzi (Arctium lappa). For treating rubella cutaneous pruritus, this product also has the function of dispelling wind and relieving itching, often combined with Schizonepeta, Saposhnikovia Root, belvedere fruit, etc.
3. It is used for edema with difficulty in urination. This product can open the lung qi to induce sweating and dredge and regulate the water passage to promote diuresis. It is suitable for treating edema with difficulty in urination accompanied by the pattern of common cold due to wind and heat. It can be used alone or combined with Ephedra, Forsythia, Chinese waxgourd peel, etc.

bubble_chart Documentation

1. Benjing: "Mainly treats intense heat and generalized itching, promotes urination and reduces water retention."
2. Bencao Congxin: "Induces sweating to dispel wind, promotes urination and reduces swelling."

bubble_chart Usage and Dosage

3-10 grams. Decoct and take orally.

bubble_chart Cautions and Contraindications

Do not use for those with exterior deficiency and spontaneous sweating.

bubble_chart Modern Pharmacology

This product contains rubescensin, vitexin, wildcelery herb sugar, and luteolin; in addition, it also contains potassium acetate, potassium chloride, iodine, bromine, and other substances. It has cardiotonic, diuretic, and mild antipyretic effects.