Yu Nao Shi Fish Otolith Dried Herbal Material 500g Wholesale TCM Ingredient

Yu Nao Shi (鱼脑石), also called Shi Shou Gu (石首骨) or Yu Zhen Shi (鱼枕石), is the otolith or ear stone from large yellow croaker, a traditional Chinese medicine material sourced from Zhejiang. In TCM theory it is traditionally associated with calming and supporting urinary comfort. Sold as a dried edible agricultural product for herbal decoction use.

Key Selling Points

• Traditional TCM material known as Yu Nao Shi 鱼脑石 from Zhejiang
• Also recognized as Shi Shou Gu 石首骨 and Yu Zhen Shi 鱼枕石 in classical references
• Dried otolith ear stone form suitable for decoction preparation
• Bulk 500 gram pack ideal for herbal shops and practitioners
• Shelf life of 36 months when stored in a cool dry place

Quality & Sensory

Typically pale whitish to grayish stony pieces with a hard dense texture and irregular shape. The material is odorless with a bland mineral taste when decocted, consistent with traditional otolith materia medica.

Technical Specifications

Usage Scenarios

• Simmered in herbal decoctions under practitioner guidance
• Ground and combined with other TCM ingredients in formulas
• Stored as a bulk apothecary ingredient for herbal shops
• Used in traditional folk preparations following classical methods

Traditional Uses

In TCM materia medica, Yu Nao Shi is traditionally associated with calming the spirit and supporting urinary tract comfort. It was historically decocted alone or combined with other herbs, sometimes ground to powder for classical formulas. Folk practice also recorded its use in seasonal herbal soups prepared under traditional guidance.

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