Introduction To Omphalia (lei wan)

TCM China:

   Introduction To Omphalia (lei wan)











Omphalia (lei wan)  


Properties: The herb is bitter in flavour, cold in nature, slightly toxic, and acts on the stomach and large intestine channels. It is mainly used to expel tapeworms. Because of its mild and slow potency, the herb should be used conseutively or in combination with other herb for expelling tapeworms. In addition, the herb also has the effects of expelling and killing roundworms and hookworms.

Effects: Killing parasites and resolving food retention.


To treat cestodiasis, 60 grams of the herb powder alone can be orally taken for two consecutive days. To treat ascariasis and ancylostomiasis, the herb can be used in combination with areca seed, quisqualis fruit and other anthelmintics.

Dosage and Administration: 6-15g. Used in pill or powder.

Precautions: The active ingredients contained in the herb are destroyed when heated or mixed with acid. Therefore, the herb should not be decocted and mixed with acid.   

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Agkistrodon Snake (bai hua she)

  Agkistrodon acutus

Properties: Sweet and salty in flavour, warm in nature, being poisonous, it acts on liver channel. The action may pass through exterior to interior, promoting the bone and expelling the wind, clearing the channels to arrest convulsion. It is suitable for rheumatic arthralgia, headache due to latent wind, tetanus, leprosy, intractable tinea, etc.

Effects: Expelling the wind and clearing channel, arresting the wind and convulsion.


1.  For rheumatic arthralgia, muscle spasm, it is used in combination with pubescent angelica root (Radix Angelicae pubescentis), Chinese angelica root (Radix Angelicae sinensis) and acanthopanax bark ( Cortex Acanthopanacis radicis), soaking in wine for drinking; for aphonia caused by apoplexy or hemiplagia, it is used together with astragalus root ( Radix Astragali seu Hedysari), and Chinese angelica root to tonify the Qi and blood, expel the wind and clear channels.

2.    For opisthotonus caused by tetanus, it is often used together with scorpion (Scorpio), gastrodia tuber ( Rhizoma Gastrodiae) and Arisaema consanguineum Schott; for infantile convulsion caused by high fever, it is used in combination with cow bezoare (Calculus Bovis) and Arisaema Bilis.

In addition, it is suitable for headache caused by latent wind, chronic infantile convulsion due to insufficiency of spleen, leprosy and intractable tinea.

Dosage and Administration: 3-10g in decoction; 0.5-1g in powder. One whole snake for decoction; 0.5-1g for powder.

Zaocys Dhumnades (Cantor)

It belongs to Calubridae (Family Zaocys). This drug is the whole snake after removal of its viscera. Sweet in flavour, neutral in nature, and nonpoisonous, its effects are similar to those of Agkistrodon snake but milder. The usual dosage is 5-10g, 2-3g in powder.