Calcium carbonate 龙骨 Lóng gǔ- "Dragon bone"   Dragon bones,   Fossil bone of large mammals       
Dragon bone is fossilized animal bone, which is high in calcium, potassium, sodium and other trace elements.
The bones are cooked and ground into a powder before being used.

Nature- cool, neutral     FLAVOR: Acrid and pleasant, sweet, harsh
FUNCTIONS
GROUP: Calm spirit- Strong
1. Calm down the spirits.[2] Oppress convulsion.[1,2] Quells excessive Yang.[1,2] Stabilizes "acridity".[1]
2. Stops perspiration.[1]
3. External applications for healing wounds.[2]
INDICATIONS
1. Palpitation.[2] Insomnia,[1,2] many dreams,[2] excessive perspiration,[1,2] night sweat.[2] Convulsions.[1,2]
2. Nervousness and apprehension.[1]
3. Premature seminal emission.[1,2] White vaginal discharge.[2] Metrorrhagia.[1,2]
4. Chronic diarrhea and rectal prolapse.[1]
5. External application for chronic carbuncle and eczema of scrotum.[2]
CONTRAINDICATIONS: Conditions of Damp Heat
PREPARATIONS: Fossilized animal bones 15-30 g.[1,2] Usually prescribed with other herbs.
References
Inner Path can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.