Pinyin: Ma Huang  Chinese: 麻黄
Pharmaceutical: Herba Ephedrae
Taxonomy: Ephedra sinica seu intermedia seu equisetina
English: Ephedra Stem / Joint Pine / Joint Fir / Mormon Tea / Brigham Tea

Tastes: Pungent, slightly bitter, warm
Meridians Entered: Lung and Bladder

Actions & Indications:

1. Induces sweating and releases the Exterior
   Taiyang Stage Wind-Cold Invasion of the Lung, with anhidrosis, chills, fever, headache and a tight, floating pulse
2. Disseminates and facilitates Lung Qi, calms wheezing and stops coughing
   Wind-Cold Obstructs Lung Qi
3. Promotes urination and reduces oedema
   Externally generated oedema
4. Warms and disperses Cold pathogens
   Wind-Cold Bi
   Cold extremities (Reynaud's disease)
5. Breaks up concretions, firmness, accumulations and gatherings (Shen Nong Ben Cao Jing)
   Yin sores that are firm, deeply rooted and without a head

Standard Dosage: 1.5-9g in decoction to release the exterior, and 10-15g for the treatment of oedema. Maximum dose is 20g. Toxic dose is considered to be 30-45g but side effects and risks are possible at any dosage.
Cautions: It is prohibited to be used for patients with deficient dyspnea without blockage of the lung qi and should be used with caution for patients with hypertension and insomnia because ephedrine can stimulate central nervous system and raise blood pressure. The Shang Han Lun recommends removing the nodes and decocting Ma Huang first, scooping the foam from the top of the decoction. It has been argued this is to reduce the "vexing" effects although the efficacy of this is debated and rarely done today.

It should not be used in conjunction with MAOIs, central nervous system stimulants, alkaloids ergotamines and xanthines enhancing their effects by acting as a receptor level agonist.

In the UK the maximum daily dose permitted without prescription is 1.8g daily in three 0.6g doses. This makes it difficult to achieve a pharmacologically active effect and must be complemented with other herbs that release the exterior and expel Wind-Cold such as Gui Zhi, Jing Jie, Fang Feng and Zi Su Ye.

Huang Hua Zi (Sida cordifolia), more common in Ayurveda where it is known as Bala बला, also contains ephedrine at lower concentrations and has no legal restrictions placed on it by the UK MHRA. It is considered more cooling, Heat clearing and Damp draining without Exterior Releasing properties in Chinese medicine so best used as a substitute in Warm Diseases, especially Damp-Warm Disease, or supplemented with increased warm Exterior Releasing herbs like those described above.

Pinyin: Shi Gao  Chinese: 石膏
Pharmaceutical: Gypsum Fibrosum / Calcium Sulphate
Taxonomy: CaSO₄
English: Gypsum / Plaster of Paris

Tastes: Pungent, sweet, cold
Meridians Entered: Lung and Stomach

Actions & Indications:

1. Clears Heat in the Qi Stage, drains Fire, relieves irritability and quenches thirst
   Heat in the Qi Stage or Yangming Heat with high fever, no chills, irritability, intense thirst, profuse sweating, restlessness, encephalitis, a flooding, big pulse and a red tongue with a yellow coat
2. Clears Excess Heat from the Lungs
   Lung Heat with cough, wheezing, fever and a thick viscous sputum
3. Clears Blazing Stomach Fire
   Stomach Fire with headache, toothache or swollen gums
4. Heals eczema, burns and ulcerated sores and wounds
   Sores and wounds (topically or internally)

Standard Dosage: 15-60g in decoction.
Cautions: Mineral products are prohibited from use in the UK under the Medicines Act 1968 ch. 67 which restricts herbalists to the use of plant products only.

Conventional replacements include Huang Lian and Zhi Mu but its actions are difficult to substitute in many cases and the patient may have to rely on OTC mineral based antacids from the pharmacy such as sodium bicarbonate and calcium carbonate which have a similar effect of binding and neutralising the stomach acid, then using herbal medicines as an adjunctive treatment. Another possibility would be to use sodium alginate that is often found in antacid medications and extracted from seaweed.

Pinyin: Gan Cao  Chinese: 甘草
Pharmaceutical: Radix Glycyrrhizae
Taxonomy: Glycyrrhiza uralensis seu glabra seu inflata
English: Liquorice Root

Tastes: Sweet, slightly cold
Meridians Entered: Heart, Lung and Spleen (and all 12 meridians)

Actions & Indications:

1. Tonifies the Spleen and augments Qi
   Spleen Qi Deficiency with shortness of breath, lassitude and loose stools
   Qi and Blood Deficiency with an irregular pulse and/or palpitations
   Heart Qi Deficiency or Heart Yang Deficiency
2. Moistens the Lungs, resolves Phlegm and stops coughing
   Lung Heat or Cold
   Productive or non-productive coughing
3. Moderates spasms and alleviates pain
   Painful muscle spasms of the abdomen and legs
4. Clears Heat and relieves Fire Toxicity
   Raw for Toxic Heat with sore throat or carbuncles and sores (Chuang Yung)
5. Antidote for many toxic substances (internal and topical)
   Poisoning
   Bites (after washing the wound, chew Gan Cao and apply a thick layer on the bite wound, changing whenever it dries out; Bao Xiang-Ao, 1846, New Compilation of Proven Formulas)
6. Moderates and harmonizes the harsh properties of other herbs and guides the herbs to all twelve channels
   Often added in small doses to harmonise formulas
7. Tonifies the Qi while suppressing Parasites
   Gu Sydnrome (Fruehauf, 1998)
   Chronic inflammatory disease (Fruehauf, 2015)
8. Aids fasting
   Mentioned in the Shen Nong Ben Cao Jing as part of the superior class of herbs which can, with protracted taking, make the body light and prolong life. This may suggest it was part of supplementing the diet when engaging in an "avoiding grain" (Bigu 辟穀) fasting regime to cultivate life (Yangsheng 養生).

Standard Dosage: Typically 1.5-9g in decoction. Large doses can be up 30g.
Cautions: It is contraindicated for combining with Hai Zao, Da Ji, Gan Sui and Yuan Hua because of "eighteen antagonisms". It is also contraindicated in cases of dampness obstruction in middle energizer and edema because it can help dampness obstruct qi, and it is prohibited from long-term usage in large dosage (more than 20g/day) and should be avoided or used with extreme caution in patients with high blood pressure because it may raise aldosterone levels in the blood causing retention of sodium.

The NHS recommends avoiding during pregnancy.

Pinyin: Sheng Jiang  Chinese: 生姜
Pharmaceutical: Rhizoma Zingiberis Recens
Taxonomy: Zingiber officinale
English: Fresh Ginger

Tastes: Pungent, warm
Meridians Entered: Lung, Spleen and Stomach

Actions & Indications:

1. Releases the Exterior, induces perspiration and disperses Cold
   Wind-Cold
2. Warms the Middle and stops vomiting
   Cold in the Stomach especially with vomiting
3. Warms the Lungs and stops coughing
   Cough due to Wind-Cold Cough due to Lung Deficiency with Phlegm
4. Reduces the toxicity of other herbs and seafood
   Herb toxicity or seafood poisoning
5. Adjusts the Ying and Wei - normalizes the flow of Qi at the center
   Taiyang Zhong Feng - Wind-Cold with Deficiency

Standard Dosage: 3-10g in decoction.
Cautions: It should be used with caution for yin deficiency with internal heat and heat exuberance because it helps promote fire and injure yin.

Pinyin: Ban Xia  Chinese: 半夏
Pharmaceutical: Rhizoma Pinelliae
Taxonomy: Pinellia ternata
English: Pinellia Rhizome

Tastes: Pungent, warm, toxic
Meridians Entered: Lung, Spleen and Stomach

Actions & Indications:

1. Dries Dampness and transforms Phlegm
   Cold-Phlegm in the Lungs (cough with copious sputum)
   Especially effective for Damp-Phlegm of the Spleen (Cold-Damp Stagnation)
2. Descends Rebellious Qi and stops vomiting (harmonizes the Stomach)
   Vomiting due to Phlegm-Damp in the Stomach (Tan Yin), Cold thin mucus, Stomach Deficiency, Stomach Heat or pregnancy
3. Dissipates nodules and reduces Stagnation (clumps)
   Phlegm in the chest (nodules, pressure, distention, pain)
   Phlegm nodules in the neck (goiter, scrofula)
   Focal distension in the chest and epigastrium
   Obstruction caused by Phlegm anywhere in the body
4. Treats sores, skin ulcerations and carbuncles and reduces swelling (external)
   Topically as a powder for sores, skin ulcerations and carbuncles

Standard Dosage: 3-10g in decoction.
Cautions: Contraindicated to Wu Tou. Use with cautions during gestation.

Must be processed before use as raw Ban Xia is toxic. Ingesting the raw form can cause severe irritation of the mouth, pharynx, and gastrointestinal tracts, and has toxic effects on the nervous system. Symptoms of toxicity include a dry mouth, numbness of the tongue, gastric discomfort, burning sensations and swelling of the mouth, tongue, throat and salivation. In serious cases ingesting Ban Xia can result in hoarseness, spasms, dyspnoea and asphyxia.

Processing can be done with ginger and alum (Jiang Ban Xia) to make a warming herb best suited for Cold-Damp and thin Phlegm conditions, or with liquorice (Fa Ban Xia) to make a more neutral herb that is less drying and can be used for Damp-Heat conditions too.

Pinyin: Da Zao  Chinese: 大枣
Pharmaceutical: Fructus Jujubae
English: Jujube Berry / Black Date / Chinese Date

Tastes: Sweet, warm
Meridians Entered: Spleen, Stomach and Heart

Actions & Indications:

1. Tonifies the Spleen and Stomach and augments Qi
   Spleen and Stomach Deficiency with weakness, shortness of breath, lassitude, anorexia and loose stools
2. Nourishes the Blood and calms the Spirit
   Blood Deficiency
   Restless Organ Syndrome with wan complexion, irritability and severe emotional debility
3. Moderates and harmonizes the harsh properties of other herbs
   Added to formulas with to counter harsh, drying and draining herbs by fortifying the Spleen, nourishing Blood and settling the Spirit.
4. Aids fasting
   Mentioned in the Shen Nong Ben Cao Jing as part of the superior class of herbs which can, with protracted taking, make the body light and prolong life. This may suggest it was part of supplementing the diet when engaging in an "avoiding grain" (Bigu 辟穀) fasting regime to cultivate life (Yangsheng 養生).

Standard Dosage: 10-30g in decoction.
Cautions: It is used with cautions in cases of damp-phlegm or food stagnation because it can help dampness produce heat, and induce distention in middle energizer.