Asarum is a kind of traditional Chinese medicine. There are many types of traditional Chinese medicine. Asarum is a plant that has a certain therapeutic effect on some diseases with cough symptoms. Each traditional Chinese medicine has its own unique effect. It can exert more effects when combined with other medicinal materials. So what are the specific effects of asarum? Let’s introduce it to you below, let’s find out together!
1. Antiasthmatic and expectorant
Asarum can relax bronchial smooth muscle and exhibit antiasthmatic effect.
In vitro experiments have shown that Asarum volatile oil has a significant antagonistic effect on bronchospasm caused by histamine and acetylcholine, and its volatile oil component methyl eugenol also has a significant relaxing effect on the trachea of ??rats.
2. Sedation and analgesia
Asarum volatile oil has obvious central inhibitory effect.
Small doses can make animals quiet, tame and reduce spontaneous activities, while large doses can make animals sleep and have obvious anti-convulsant effects. Asarum decoction taken by gavage also has analgesic effect. Its strong analgesic effect is an important pharmacological basis for the treatment of headache, body pain, toothache, etc.
3. Cooling and antipyretic
The oral administration of Asarum volatile oil can treat domestic diseases caused by various causes such as warm acupuncture, tetrahydro-β-naphthylamine, typhoid and paratyphoid mixed vaccines. It has obvious antipyretic effect on rabbit experimental fever, and also has obvious antipyretic effect on rat fever caused by brewer's yeast. It can also lower the body temperature of normal rats.
4. Anti-inflammatory and anti-allergic
Asarum volatile oil has obvious anti-inflammatory effects when taken or injected.
For example, asarum has a significant inhibitory effect on joint swelling in rats caused by inflammatory agents such as carrageenan, yeast, egg white, formaldehyde, etc., and can resist swelling of mouse auricles caused by croton oil. , inhibit rat skin edema caused by antiserum, increase capillary permeability caused by histamine, and inhibit plastic ring and cotton ball granulation proliferation. It still has anti-inflammatory effects on rats without adrenal glands.
5. Cardiotonic
Asarum has the effects of strengthening the heart, resisting myocardial ischemia and increasing blood pressure.
In vitro experiments show that Asarum volatile oil has a significant stimulating effect on the heart of rabbits and rats, showing positive inotropic effects, positive frequency effects, and can increase coronary flow. For experimental cardiogenic shock in dogs, asarum can increase mean arterial pressure, peak left ventricular pressure and coronary sinus flow.
6. Antibacterial and antiviral
Asarone alcohol extract and volatile oil have certain in vitro inhibitory effects on Gram-positive bacteria, Bacillus subtilis and Bacillus typhi. The decoction is effective against Mycobacterium tuberculosis. and typhoid bacilli also have inhibitory effects. Asarum volatile oil has inhibitory effects on a variety of fungi such as Aspergillus flavus, Aspergillus niger, Candida albicans, etc. The active antibacterial ingredient is safrole. α-Asarone can inhibit the proliferation of respiratory syncytial virus.
7. Local anesthesia
50% Asarum decoction can block the impulse conduction of the toad’s sciatic nerve, and the effect is reversible. Its anesthetic effect is close to that of 1 procaine. Volatile oil has surface anesthesia and infiltration anesthesia effects. 50% Asarum tincture also has a local anesthetic effect when applied to the human tongue. Can be used clinically for local anesthesia.
8. Taboos of Asarum
1. "Compendium of Materia Medica": In all diseases, internal heat and fire cause inflammation in the upper part, excess of upper part and lower part of the body, qi deficiency with sweating, blood deficiency, headache, and yin If you have a weak cough, all methods are contraindicated.
2. "Compendium of Materia Medica": If the powder of Asarum is used alone, it should not exceed half a qian dagger. If it is too much, it will lead to stuffy Qi and death.
3. Do not take it if you have qi deficiency and excessive sweating, blood deficiency, headache, yin deficiency and cough.
9. Careful clinical application
1. Cold and cold. This product is pungent and warm, with a clear aroma. It is good at relieving the surface and dispersing cold, dispelling wind and relieving pain. It is suitable for those with exogenous wind-cold and severe head and body pain. It is often used together with Qianghuo, Fangfeng, Angelica dahurica and other wind-removing and analgesic drugs, such as Jiuwei Qianghuo Decoction: Because it can dispel wind and cold, and clear the nose, it is suitable for people with cold and cold who have nasal congestion and runny nose. It is often combined with Angelica dahurica, Xanthium seed and other medicines. In addition, asarum not only enters the lung meridian to disperse the wind and cold on the surface, but also enters the kidney meridian to eliminate the cold evil inside. It can be used with ephedra and aconite to treat yang deficiency and external symptoms, aversion to cold, fever, no sweat, and a heavy pulse, such as ephedra and aconite. Asarum soup.
2. Headache, toothache, rheumatic arthralgia.
The pungent aroma of this product spreads, releases stagnation, reaches the top, tones the nine orifices, is good at dispelling wind and cold, and has strong analgesic power. It is especially suitable for various cold pains such as wind-cold headache, toothache, paralysis, etc. certificate. For the treatment of Shaoyin headaches, foot cold qi inversion, and thin pulse, it is often used with Duhuo, Ligusticum chuanxiong and other drugs, such as Duhuo Xixin Decoction; for treating exogenous wind evil and migraine headaches, it is often used together with Chuanxiong, Angelica dahurica, and Qianghuo, such as Ligusticum chuanxiong. Tea can be mixed with powder; if it is used to treat pain caused by wind-cold headaches such as broken pulse or weak and tight pulse, it should also be combined with Chuanxiong, Ephedra, and Aconite, such as Asarum powder. To treat wind-cold toothache, you can use Asarum alone or decoct it with Angelica dahurica and Piper longum to gargle; if you have stomach fire and toothache, you can also mix it with gypsum, coptis, cohosh and other stomach-clearing and purgative medicines; if you have toothache due to tooth decay, you can mix it with Killer. Gargle with honeycomb decoction to relieve pain from insects; Asarum not only disperses the cold evil in the Shaoyin kidney meridian to unblock yang and dissipate stagnation, but also searches for rheumatism between the muscles and bones to relieve pain from paralysis. Therefore, it is often combined with Duhuo, Sangji, Fangfeng, etc. to treat Wind-cold-damp paralysis, cold pain in the waist and knees, such as Duhuo Jisheng Decoction.
3. Biyuan. This product is pungent and warm, has a penetrating aroma, disperses wind evil, resolves dampness and turbidity, and clears the nasal orifices. It is commonly used to treat nasal congestion, runny nose, and headaches caused by rhinitis and other rhinological diseases. It is a good medicine for treating rhinitis and should be combined with Angelica dahurica. , Xanthium sibiricum , Xanthium barbadensis and other medicines for dispersing wind and cold and clearing the nose and orifices are compatible.
4. Cough and asthma due to cold lung. This product is pungent, dispersing and warming. It can dissipate wind and cold externally and warm the lungs and transform fluids internally. It is often used together with the decoctions to dispel cold and disperse lungs and warm and resolve phlegm. It is mainly used to treat cough and asthma due to wind-cold or cough and asthma caused by cold fluids. For the treatment of exogenous wind-cold, aversion to cold, fever, no sweating, wheezing and coughing, and excessive and thin phlegm when drinking water, it is often used with ephedra, cinnamon twigs, and dried ginger, such as Xiaoqinglong Decoction; if it is purely cold phlegm, stop drinking and shooting For lungs, cough with chest fullness, reverse qi and shortness of breath, it can be combined with medicines such as Poria cocos, dried ginger, Schisandra chinensis, such as Linggan Wuwei Jiangxin Decoction.