Overview
Dried leech, or '晒干水蛭,' is a traditional Chinese medicinal material derived from the drying of fresh leeches, primarily species like Hirudo nipponica or Whitmania pigra. It has been used for centuries in herbal medicine for its therapeutic properties. The drying process preserves the bioactive compounds, making it a valuable ingredient in various formulations. In traditional medicine, dried leech is prized for its ability to improve blood circulation and resolve blood stasis. It is often incorporated into decoctions, powders, or capsules. Modern research has also explored its potential in anticoagulant therapies, though its use remains largely rooted in traditional practices.
Physical and Chemical Properties
Dried leech appears as dark brown to black, flattened strips with a leathery texture. It is insoluble in water but may partially dissolve in alcohol, which is often used to extract its active compounds. The material retains its bioactive properties, including hirudin, a natural anticoagulant. The drying process must be carefully controlled to prevent degradation of these compounds. Properly dried leeches should be free from mold and moisture, ensuring long-term stability. The material is lightweight and brittle, making it easy to grind into powder for medicinal use.
Main Applications
Dried leech is primarily used in traditional Chinese medicine (TCM) to treat conditions related to blood stasis, such as thrombosis, bruises, and circulatory disorders. It is often combined with other herbs to enhance its effects. In TCM formulations, it is believed to 'invigorate blood' and 'disperse stasis.' Beyond TCM, dried leech has garnered interest in Western medicine for its anticoagulant properties. Research is ongoing into its potential applications in cardiovascular therapies. However, its use outside of TCM remains limited and requires further clinical validation.
Safety and Storage
Dried leech should be stored in a cool, dry environment to prevent moisture absorption and mold growth. Proper packaging, such as airtight containers, is essential to maintain its quality. The material has a long shelf life if stored correctly. Safety precautions include using dried leech under professional guidance, as improper use may lead to allergic reactions or excessive bleeding. It is contraindicated for individuals with bleeding disorders or those taking anticoagulant medications. Always consult a healthcare provider before use.
B2B Procurement Guide
When procuring dried leech for B2B purposes, prioritize suppliers who adhere to medicinal standards and provide documentation of quality control. Verify the drying process to ensure the material retains its bioactive properties. Pricing varies based on quality, with higher-grade leeches commanding premium prices. Consider the source of the leeches, as wild-caught varieties may differ in potency from farmed ones. Establish long-term relationships with reputable suppliers to ensure consistent quality. For reference, prices typically range from $50 to $200 per kilogram, depending on purity and processing methods.
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