Coltsfoot – Kuan Dong Hua

Coltsfoot
[Medicinal use] This product is the external flowering head inflorescence of the plant coltsfoot of the Asteraceae family.
[Nature and flavor and meridians] Spicy, warm. Enters the lung meridian.
[Effects] Relieve cough and resolve phlegm.
[Clinical application] Used for cough and asthma, chronic cough due to lung deficiency, etc.
Coltsfoot has a good effect of resolving phlegm and relieving cough. When used to treat cough and asthma or chronic cough, it is often used together with Aster to achieve the effect of eliminating phlegm and lowering qi. Because of its warm nature, it is more suitable for cold cough. If it is properly matched, it can also be used for symptoms such as cough with blood and phlegm.
[Prescription name] Coltsfoot, winter flower (Shanghai area, all given raw), stir-fried winter flower, stir-fried coltsfoot (fried slightly), honey-roasted coltsfoot, roasted coltsfoot, roasted winter flower (mixed with honey and stir-fried, has a lung-moistening effect)
[General dosage and usage] One to three coins, decocted and taken.
[Comments] Coltsfoot and Aster have similar effects, both of which can resolve phlegm and relieve cough, so they are often used together in clinical applications. However, Coltsfoot has a stronger antitussive effect, but a weaker expectorant effect; Aster is just the opposite.
[Example of prescription] Coltsfoot powder “Hejijufang”: Coltsfoot, Anemarrhena, mulberry leaves, donkey-hide gelatin, ephedra, Fritillaria, bitter almonds, licorice, pinellia, ginger. Treat cough caused by lung heat and wind evil.
This product is the dried flower buds of Tussilago farfara L., a plant of the Asteraceae family. Dig it up in December or before the ground freezes when the flowers are still unearthed, remove the flowers and mud, and dry it in the shade.
[Properties] This product is in the shape of an oblong rod. Solitary or 2~3 bases are connected, 1~2.5cm long, 0.5~1cm in diameter. The upper end is thicker, the lower end gradually tapers or has a short stalk, and there are many fish-scale bracts on the outside. The outer surface of the bract is purple-red or light red, and the inner surface is densely covered with white flocculent hairs. The body is light and white hairs can be seen after tearing it open. It has a fragrant smell and a slightly bitter and pungent taste.
[識別]
(1) This product is brown in color. There are many non-glandular hands, which are single-celled and twisted into a ball with a diameter of 5~24um. The glandular hairs are slightly rod-shaped, with 4~8 cells on the head and 2 rows of cells on the stalk. The pollen grains are small, spherical in diameter, 25~48um, with sharp thorns on the surface and 3 germination holes. The pappus is branched, each branch is single-celled, and the tip is gradually pointed. The secretory cells are round or oblong and contain yellow secretions.
(2) Take 1g of this product powder, add 20ml of ethanol, ultrasonically treat for 1 hour, filter, evaporate the filtrate to dryness, add 1ml of ethyl acetate to the residue to dissolve it, and use it as the test solution. Take 1g of the control medicinal material of coltsfoot flower and prepare the control medicinal material solution in the same way. Take another reference substance of coltsfoot ketone, add ethyl acetate to make a solution containing 1 mg per 1 ml, as the reference substance solution. According to the thin layer chromatography method (General Rule 0502), take 2~5u1 of the test solution and the reference medicinal material solution, and 2u of the reference substance solution, and spot them on the same tridacna G thin layer plate, use petroleum ether (60~90℃)-acetone (6:1) as the developing agent, develop, take out, dry, spray with 10% sulfuric acid ethanol solution, heat at 105℃ until the spots are clearly colored, and examine under ultraviolet light (365nm). In the chromatogram of the test sample, spots of the same color appear at the corresponding positions of the chromatogram of the reference medicinal material and the chromatogram of the reference substance.
[Extract] According to the hot leaching method under the determination method of alcohol-soluble extracts (General Rule 2201), ethanol is used as the solvent, and it shall not be less than 20.0%.
[Content determination] According to the high performance liquid chromatography method (General Rule 0512)
Chromatographic conditions and system suitability test Octadecyl brickane bonded tridacnamidol as filler; methanol-water (85:15) as mobile phase: detection wavelength is 220nm, and the number of theoretical plates calculated according to the coltsfoot ketone peak should not be less than 5000.
Preparation of reference solution Take an appropriate amount of coltsfoot ketone reference, accurately weigh it, add mobile phase to make a solution containing 50ug per 1ml, and obtain it.
Preparation of test solution Take about 1q of this product powder (passed through No. 4 sieve), accurately weigh it, put it in a stoppered conical bottle, accurately add 20m of ethanol, weigh it, ultrasonically treat it (power 200W, frequency 40kHz) for 1 hour, let it cool, weigh it again, make up the lost weight with ethanol, shake it well, filter it, and take the filtrate to obtain it. Determination method, accurately aspirate 20u of reference solution and test solution respectively, inject it into liquid chromatograph, and determine it. This product, calculated on the basis of dry product, contains not less than 0.070% coltsfoot ketone (C23H3405).
煎じ薬
[処理]
Cottonsfoot flower Remove impurities and residual stems.
[Properties][Identification][Extract][Content determination]
医薬品原料と同じ。
Honey coltsfoot flower Take clean coltsfoot flower and stir-fry with honey water according to the honey roasting method (General Rule 0213) until it is not sticky.
[プロパティ]
This product is shaped like coltsfoot flower, with a brown or brown surface and slightly sticky. It has a honey aroma and tastes slightly sweet.
[抽出する]
Same as medicinal material, not less than 22.0%.
[Identification][Content determination]
医薬品原料と同じ。
【自然と味と経絡】
Spicy, slightly bitter, warm. It enters the lung meridian.
【機能と効能】
Moisturize the lungs and lower the qi, relieve cough and resolve phlegm. Used for new and long-term cough, wheezing, coughing and sputum, and coughing up blood due to fatigue.
[Usage and dosage)
5〜10g。
【ストレージ】
Place in a dry place, moisture-proof and moth-proof.
Where is the main origin of coltsfoot?
It is mainly produced in Inner Mongolia, Shaanxi, Gansu, Qinghai and Shanxi.
Where is the main medicinal part of coltsfoot?
Medicinal part of coltsfoot:
This product is the dried flower buds of Tussilago farfaraL., a plant of the Asteraceae family. It is dug in December or before the ground freezes when the flowers have not yet emerged from the ground, and the pedicels and mud are removed and dried in the shade.
Characteristics of the medicinal part of coltsfoot:
This product is in the shape of an oblong rod. Solitary or 2~3 bases are connected, 1~2.5cm long and 0.5~1cm in diameter. The upper end is thicker, the lower end gradually tapers or has a short stalk, and the outside is covered with many fish-scale bracts. The outer surface of the bract is purple-red or light red, and the inner surface is densely covered with white flocculent hairs. The body is light, and white hairs can be seen after tearing it open. It has a fragrant smell and tastes slightly bitter and spicy.
How are coltsfoot flowers recorded in ancient books?

《本经》: “It treats cough, reverse breathing, wheezing, throat numbness, epilepsy, cold and heat evil spirits.

《本经逢源》: “It moistens the lungs and eliminates phlegm, stops cough and asthma.

Effects and effects
Coltsfoot flowers have the effects of moistening the lungs and descending qi, stopping cough and eliminating phlegm.

What are the main effects and clinical applications of coltsfoot flowers?
Cottonfoot flowers are used for new and long-term coughs, wheezing, coughing and sputum, and coughing and coughing with blood.

Cough

·Treat cold evil hurting the lungs, long-term cough, often used with Aster.

·Treat external cold and stagnation of fluid, cough, wheezing and sputum, often used with ephedra, asarum, pinellia, etc.

It is often used with Fritillaria thunbergii, Morus alba, etc.

Treat lung heat cough and asthma,

Treat lung deficiency and long-term cough, often used with ginseng, Schisandra chinensis, etc.

Treat yin deficiency and dry cough, often used with Adenophora radix and Ophiopogon japonicus, etc. .
What other effects does coltsfoot have?
In my country’s traditional food culture, some Chinese medicinal materials are often widely consumed as food ingredients by the people, that is, materials that are both food and Chinese medicinal materials according to tradition (i.e. edible drug substances). According to the documents issued by the National Health Commission and the State Administration for Market Regulation, coltsfoot can be used as both medicine and food within a limited range of use and dosage.
The commonly used medicinal diet recipes for coltsfoot are as follows:
Chuanbei Qiuli Paste
30g each of coltsfoot, lily, ophiopogon, and Fritillaria, 1000g of autumn pear, 50g of rock sugar, and 100g of honey.
Put coltsfoot, lily, ophiopogon, and Fritillaria in a pot and add water to boil into a thick juice, remove the residue and keep the juice. Wash the autumn pear, peel and core it, squeeze the juice, and put the pear juice and ice.
Put sugar into the medicinal juice together, simmer until the pear pulp is thick, then add honey and mix well, turn off the heat when it boils again, cool it down and bottle it for later use.
Take 15g of paste each time, take it twice a day, and take it with warm water. .
Note: The use of Chinese herbal medicines must be treated according to the syndrome differentiation and should be used under the guidance of professional Chinese medicine practitioners. Do not use them at will, and do not listen to Chinese medicine prescriptions and advertisements at will.
What are the compound preparations containing coltsfoot flowers?
Platinum and winter flower tablets
Relieve cough and eliminate phlegm. Used for cough and sputum caused by phlegm blocking the lungs; bronchitis with the above symptoms, Zhisou Huatan Pills
Clear the lungs and eliminate phlegm, stop cough and stop wheezing. Used for phlegm heat blocking the lungs, chronic cough, hemoptysis, phlegm wheezing, wheezing and insomnia.
Chuanbei Xueli Paste
Moisturizes the lungs and relieves cough, promotes fluid production and relieves throat. Used for yin deficiency and lung heat, cough, shortness of breath, dry mouth and throat
Juhong Capsules
Clear the lungs, eliminate phlegm, and relieve cough. Used for phlegm heat cough, excessive phlegm, yellow and sticky color, chest tightness and dry mouth. Yimu Ansou Pills
Clear the lungs and eliminate phlegm, stop cough and stop wheezing. Used for chronic cough due to fatigue, cough and phlegm wheezing, bone steaming and hot flashes, hoarseness and heavy voice, dry mouth and tongue, and phlegm congestion.
Modern research progress on coltsfoot
Modern research results show that this product has multiple pharmacological effects such as antitussive, expectorant, asthmatic, blood pressure raising, platelet aggregation inhibition, and anti-inflammatory.
Usage method
Colltsfoot is generally used as coltsfoot slices and decocted.
How to use coltsfoot correctly?
When coltsfoot decoction is taken orally, the common dosage is 5~10g.
After different processing methods, Chinese medicinal materials such as coltsfoot and honey coltsfoot can be produced. It is suitable to use raw for external cough, and honey roasted for internal injury and long-term cough. Different processing methods have different effects, but the method of use is the same. Please follow the doctor’s advice for specific medication.
Colltsfoot is generally used in decoctions, decocted and taken, and can also be made into powder or pills for consumption. However, the use of Chinese medicinal materials must be differentiated and treated, and should be used under the guidance of professional Chinese medicine practitioners. It should not be used at will, and it is even more forbidden to listen to Chinese medicine prescriptions and advertisements at will.
How to process coltsfoot?
Coltsfoot: Take the original medicinal materials, remove impurities and residual stems, and sieve out the ash.
Honey coltsfoot: Take refined honey, add appropriate amount of boiling water to dilute, pour into clean coltsfoot, mix well, steam, put in a frying container, heat with slow fire, fry until slightly yellow and not sticky, take out and cool. For every 100kg of coltsfoot, use 25kg of refined honey.
Which drugs should be used with coltsfoot at the same time?
The combined use of Chinese medicine and Chinese and Western medicine requires syndrome differentiation and clinical individualized treatment.
If you are using other drugs, please consult a doctor before taking the medicine, and inform the doctor of all your diagnosed diseases and treatment plans you are receiving.
投薬指示
Coltsfoot is pungent and warm, and it is easy to consume qi and help heat, so those who cough up blood or cough up pus and blood due to lung abscess should be careful when taking it.
What precautions should be taken when using coltsfoot?
· People with strong lung fire should take it with caution.
· This product has a fragrant smell and tastes slightly bitter and pungent. It is better to have large flowers, purple-red color, and no pedicels.
During medication, you should avoid eating cold, raw and cold food, spicy and greasy food, and avoid smoking and drinking.
Pregnant and lactating women: If you are pregnant, planning to get pregnant or are lactating, please inform your doctor in time and consult whether Chinese medicine can be used for treatment.
Treatment.
· Children: Children should be treated under the guidance of a doctor and adult supervision
· Please properly store the medicinal materials and do not give your own medicinal materials to others for use.
· Avoid using copper or iron utensils to decoct medicine.
How to identify and use coltsfoot?
Aster and coltsfoot
Both are expectorant, cough-relieving and asthma-relieving drugs, both have the functions of moistening the lungs and lowering qi, relieving cough and reducing phlegm, and both are warm and moist without dryness. They can be used for cough regardless of cold, heat, deficiency or excess, and the length of the disease. The two are often used together. However, Aster is more inclined to expectorant, while coltsfoot is especially good at relieving cough.