Calcined Oyster Shell Duan Mu Li 500g Wild-Harvested TCM Mineral Herb for Decoction

Calcined Oyster Shell, known in TCM as Duan Mu Li (煅牡蛎), is the heat-processed shell of Ostrea species, prepared by high-temperature calcination. Traditionally associated with settling and calming in TCM theory, this mineral material is supplied as clean, dried shell pieces for decoction use. Store sealed in a cool, dry place and use under the guidance of a qualified practitioner.

Key Selling Points

• Traditional TCM mineral herb prepared from oyster shell
• Known as Duan Mu Li (煅牡蛎) in Chinese herbal practice
• Calcined processing yields a light, porous, easy-to-decoct form
• Supplied as clean dried shell segments for herbal formulas
• Suitable for decoction preparation under practitioner guidance

Quality & Sensory

Typically pale grey to off-white with a rough, porous texture and a dry, mineral character. Calcined shell pieces are lightweight and brittle, and when decocted they typically impart a bland, stony taste with no strong aroma.

Technical Specifications

Usage Scenarios

• Long-simmered herbal decoctions
• Traditional mineral-based formulas
• Practitioner-directed herbal preparations
• Seasonal tonic soup recipes with other herbs

Traditional Uses

In TCM practice, calcined oyster shell has traditionally been used in decoctions, often simmered for an extended period before other herbs are added. It is traditionally associated with settling, calming, and astringing functions in classical formulas, and is commonly paired with herbs such as dragon bone or abalone shell. Use only as directed by a qualified practitioner.

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