This product is the rhizome with the base of the petiole of the perennial herbaceous plant Shield-fern Rhizome (Cyrtomium frtunei J.Sm.), male fern rhizome (Dryopteriscrassirhizoma Nakai), and the herbaceous plant Osmunda japonica (Osmunda japonica Thunb.) of the Osmundaceae family. Shield-fern Rhizome is mainly produced in North China, Northwest China, and regions south of the Yangtze River; male fern rhizome is mainly produced in Liaoning, Jilin, Heilongjiang, and other places; Osmunda japonica is mainly produced in Jiangsu, Zhejiang, Sichuan, Henan, and other places. It is harvested in autumn, washed, the petioles and fibrous roots are removed, and then dried in the sun. It is used sliced raw or stir-fried to scorch.

bubble_chart Properties and Meridians

Bitter, slightly cold. slightly toxic. act on liver and spleen channels.

bubble_chart Efficacy

Clearing heat and removing toxin, killing worms, cooling blood and stopping bleeding.

bubble_chart Indications

1. Used for wind-heat common cold, warm febrile disease with macules, and mumps, etc. This product is bitter and cold, capable of clearing heat toxin from the qi aspect and blood aspect. It can be used alone or in combination with Mulberry Leaf to treat epidemic common cold and has a preventive effect; for treating measles, epidemic parotitis, encephalitis B, etc., it is often combined with Isatis RootDyers Woad Leaf, Arnebia, etc., to achieve the effects of clearing heat and removing toxin, cooling blood and resolving macula.
2. Used for various intestinal parasitic diseases such as tapeworm, hookworm, and roundworm. This product has the function of killing worms. Benjing states that it "kills three worms," and Bielu mentions it "removes inch white." For expelling and killing tapeworms, it is often combined with Areca Seed, Thunder Ball, etc.; for treating hookworm disease, it is often combined with Grand Torreya Seed, Areca Seed, etc.; for treating roundworm accumulation with abdominal pain, it is often combined with Quisqualis Fruit, Melia bark, etc.; for treating pinworms, it can be used alone by decocting the juice and washing around the anus before sleep.
3. Used for hematemesis, epistaxis, bloody stool, menorrhagia and metrostaxis due to blood heat. This product has the function of cooling blood and stopping bleeding, especially effective for menorrhagia and metrostaxis with bleeding, suitable for those with blood heat. It can be used alone, such as in Bencao Tujing for epistaxis, used alone and ground into powder for oral administration; for treating hematemesis, epistaxis, bloody stool, etc., it can also be combined with Platycladus, lalang grass rhizome, etc.; for treating menorrhagia and metrostaxis with bleeding, it is often combined with Trogopterus Dung and other combinations of medicinals; if it is due to failure of qi to control blood, it is combined with Astragalus Root, Chinese Angelica, Donkey-hide Gelatin, etc., to tonify qi and control blood, nourish blood and stop bleeding. In addition, this product can also be used to treat burns and scalds, leukorrhea in women, hypertension with dizziness and vertigo, etc.

bubble_chart Documentation

1. Benjing: "It governs pathogenic heat in the abdomen, various toxins, and kills three types of parasites."
2. Bielu: "It removes tapeworms, breaks up abdominal masses, eliminates head wind, and stops incised wounds."
3. Bencao Gangmu: "It treats bloody stools, menorrhagia, leukorrhea, postpartum blood stasis and distending pain, macula and papule, lacquer sores, and bone obstruction."

bubble_chart Usage and Dosage

Decoct and take 10-15g. Use raw for killing worms and clearing heat and removing toxins; use stir-fried to scorch for hemostasis.

bubble_chart Cautions and Contraindications

Male fern rhizome is toxic and should not be used in large doses. It should be used with caution in cases of deficiency-cold of the spleen and stomach.

bubble_chart Modern Pharmacology

Dryopteris crassirhizoma mainly contains dryocrassin, aspidin, dryocrassol, filicic acid, flavaspidic acid, and filicin; Osmunda japonica mainly contains ponasterone A and ecdysterone. Shield-fern Rhizome has inhibitory effects on Japanese encephalitis virus, influenza virus, and mumps virus; filicic acid and flavaspidic acid have strong anthelmintic effects and are highly toxic to tapeworms, causing paralysis and expulsion. Japanese flowering fern rhizome can expel hookworms, roundworms, and whipworms. Shield-fern Rhizome has a strong contraction effect on the isolated uterus.