This product is the underground stem of the grassy perennial herbaceous plant reed (Phragmites communis (L.) Trin.). It is distributed throughout our country. It can be excavated in late spring, early summer or autumn, washed, cut into sections, and used fresh or dried in the sun.

[Property]

sweet, cold. act on lung and stomach channels.

[Efficacy]

clearing heat and promoting fluid production, eliminating irritability and relieving vomiting.

[Indications]

1. For Rebing polydipsia. This product is sweet, cold and light in texture. It can clear the lungs and stomach qi and separate excess heat. It can also enrich yin and produce fluid, quench thirst and relieve troubles, without the disadvantages of evil. Therefore, it is used for Rebing damage to fluid, irritability, heat, thirst, or dry tongue and less fluid. It is often used with Snakegourd Root and Ophiopogon Tuber Equivalent.
2. Used for stomach heat and vomiting. This product can clear stomach heat and downbearing counterflow to stop vomiting. It is often used together with Bamboo Shavings and Ginger Juice.
3. Used for lung heat cough and lung abscess. This product clears lung heat, dispelling phlegm and expelling pus. Used for lung heat cough with thick yellow phlegm. It is often used together with Trichosanthis Fruit, Fritillaria Bulb and Skullcap Root; external contraction Wind heat, body heat cough, often used synonymously with Mulberry Leaf, Chrysanthemum Flower, Platycodon Root, such as Mulberry Leaf and Chrysanthemum Decoction; lung abscess vomiting pus, and often combined with medicinals such as Coix Seed and waxgourd seed to enhance clearing heat to drain pus The effect is like Phragmites Stem Decoction.
4. In addition, this product has diuretic and promoting eruption effects. The combination of medicinals lalang grass rhizome, Plantain Seed, etc. can treat short red urine and heat stranguria. ; combination of medicinals Mentha, Cicada Slough, etc. to treat measles-induced insufficiency.

[Documentation]

1. Bielu: "Treat consumptive thirst, guest heat, relieve urination."
2. Xinxiu Bencao: "Treat vomiting, inability to eat, heat in the stomach , disease caused by cold patient Yiliang."

[Usage and Dosage]

Decoction and take, 15-30g of dry product, 30-60g of fresh product. Fresh Reed Rhizome is effective in clearing heat and promoting fluid production and diuresis, while dried Reed Rhizome is less effective.

[Precaution]

People with deficiency-cold of spleen and stomach should not take it.

[Modern Pharmacology]

This product contains coixin, Asparagus Root amide, etc. In vitro experiments have inhibitory effects on β-hemolytic streptococci.