Yu Nao Shi (Fish Otolith / Fish Brain Stone) — Dried TCM Mineral Herb, 500g

Yu Nao Shi (鱼脑石), also known as Yu Zhen Gu (鱼枕骨) or Shi Shou Gu (石首骨), is the dried otolith — the small stony structure from the inner ear of certain fish, traditionally the large yellow croaker — used in Traditional Chinese Medicine (TCM) as a mineral-based medicinal ingredient. In TCM it is classified as sweet and neutral in nature, entering the Kidney and Liver channels, and has long been prized as a diuretic and stone-dissolving herb traditionally used to support urinary health, ease difficult urination, and address internal accumulations. It is a food agricultural product, sun-dried and offered in a 500g pack.

Key Selling Points

• Traditional mineral herb known as Yu Nao Shi (鱼脑石)
• Also called Yu Zhen Gu (鱼枕骨) and Shi Shou Gu (石首骨)
• Sun-dried (晾晒) processing to preserve quality
• 500g pack of food agricultural product
• Traditionally used in TCM for urinary and stone-related support

Quality & Sensory

Each batch of Yu Nao Shi is sun-dried to preserve its characteristic pale, ivory-to-cream color and hard, dense, stone-like texture. The pieces are small, irregular, and firm, with a faint marine-mineral aroma and no strong odor. When decocted, they release a mild, slightly salty-mineral taste into the broth, contributing a subtle earthy note to herbal formulas.

Technical Specifications

Usage Scenarios

• Traditional herbal decoctions and formulas
• TCM urinary and stone-related support blends
• Combined with other mineral or herbal ingredients in soups
• As a powdered ingredient in custom herbal preparations

Traditional Uses

In folk herbal practice, Yu Nao Shi is decocted alone or in combination with other herbs to support urinary function and address internal accumulations. It is traditionally paired with herbs like Hai Jin Sha (Lygodium spore) and Jin Qian Cao (Lysimachia) in formulas for urinary wellness. It may also be ground into a powder and taken with warm water, or added to soups and decoctions as part of a daily wellness routine.

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