This product is the rhizome of the perennial herbaceous plant of the Poaceae family, reed (Phragmites communis (L.) Trin.). It is distributed throughout the mainland. It can be harvested in late spring and early summer or in autumn, washed, cut into sections, and used fresh or dried.

bubble_chart Properties and Meridians

Sweet, cold. act on lung and stomach channels.

bubble_chart Efficacy

Clearing heat and promoting fluid production, relieving irritability and stopping vomiting.

bubble_chart Indications

1. Used for Rebing polydipsia. This product is sweet, cold, and light in nature, capable of clearing and dispersing lung and stomach qi excess heat, and can enrich yin and produce fluid, relieve thirst and irritability, without retaining pathogenic factors. Therefore, it is used for Rebing damage to fluid, irritability and thirst, or dry tongue with little fluid, often combined with Snakegourd Root, Ophiopogon Tuber, etc.
2. Used for stomach heat vomiting. This product can clear and discharge stomach heat and downbear counterflow to stop vomiting, often combined with Bamboo Shavings, ginger juice, etc.
3. Used for lung heat cough, lung abscess with pus expectoration. This product clears and disperses lung heat, dispels phlegm and expels pus. Used for lung heat cough with yellow, thick sputum, often combined with Trichosanthis Fruit, Fritillaria Bulb, Skullcap Root; for external contraction of wind-heat, fever and cough, often combined with Mulberry Leaf, Chrysanthemum Flower, Platycodon Root, etc., such as Mulberry Leaf and Chrysanthemum Decoction; for lung abscess with pus expectoration, often combined with Coix Seed, waxgourd seed, etc., to enhance the effect of clearing heat and draining pus, such as Phragmites Stem Decoction.
4. In addition, this product also has diuretic and promoting eruption effects, combined with lalang grass rhizome, Plantain Seed, etc., to treat short, red urine and heat stranguria with painful urination; combined with Mentha, Cicada Slough, etc., to treat measles with poor eruption.

bubble_chart Documentation

1. Bielu: "The Lord relieves consumptive thirst and guest heat, and stops frequent urination."
2. Xinxiu Bencao: "Treats vomiting and inability to eat, stomach heat, and is particularly beneficial for cold-damage disease patients."

bubble_chart Usage and Dosage

Decoct and take orally, 15-30g for dried product, 30-60g for fresh product. Fresh Reed Rhizome is excellent for clearing heat, promoting fluid production, and diuresis, while the dried Reed Rhizome is less effective.

bubble_chart Cautions and Contraindications

Those with deficiency-cold of the spleen and stomach should avoid taking it.

bubble_chart Modern Pharmacology

This product contains coixol, asparagine, and other components. In vitro experiments have shown inhibitory effects on β-hemolytic streptococcus.