This product is the whole herb of the perennial evergreen cryptogamous plant Scouring Rush Herb (Equisetum hyemale L.) from the Scouring Rush Herb family. It is produced in the northeastern, northern, Inner Mongolia, and Yangtze River basin provinces. Harvested in summer, it is cleaned of impurities and fibrous roots, then dried in the sun or shade, cut into sections, and used medicinally.

bubble_chart Properties and Meridians

Sweet and bitter, neutral. Act on lung and liver meridians.

bubble_chart Efficacy

Releasing exterior with pungent-cool, improving vision to dissipate nebula.

bubble_chart Indications

1. Used for wind-heat red eye, nebula obstruction with excessive tearing. This product disperses wind-heat, reduces eye nebula, and has the function of inducing sweating to release the exterior. It is mainly applied to external contraction of wind-heat, red eye nebula obstruction with excessive tearing, and those with exterior pattern. It is often combined with Cicada Slough, buerger pipewort flower, snake slough, etc., such as in Shen Xiao San; for treating external ophthalmopathy red eye, nebula membrane covering the eye due to liver deficiency, it can be used with buerger pipewort flower, Abalone Shell, and pig liver. This product is less commonly used for general wind-heat common cold.
2. Used for bloody stool and hemorrhoid bleeding. This product also has a hemostatic effect and is used with Skullcap Root, Sanguisorba, Japanese Pagodatree Pod, etc.

bubble_chart Documentation

1. Benjing Fengyuan: "It is primarily used for eye diseases caused by wind-heat and sudden nebula, as it disperses wind-evil from the liver and gallbladder. However, it is not suitable for long-term nebula and blood deficiency, as excessive consumption can cause eye swelling."

bubble_chart Usage and Dosage

3-10 grams. Decoct and take orally.

bubble_chart Modern Pharmacology

It contains scouring rush herb acid, silicate, saponins, etc. It has effects such as lowering blood pressure, anti-inflammatory, astringent, and diuretic.