Ostreidae- family Ostrea gigas, Ostrea edulis  牡 蛎 Mǔ lì, Hai ko   Oyster       
Many, but not all, oysters are in the superfamily Ostreoidea.

Ostrea edulis 牡 蛎 肉 Mǔ lì ròu   Oyster meat   
This is a species of oyster native to Europe and commonly known as the European flat oyster, Colchester native oyster, mud oyster, or edible oyster . When mature, adults range from 3.8 to 11 centimetres across. The species naturally ranges along the western and southern coasts of Europe from Norway to Morocco and including most of the British Isles and the Mediterranean coast.
Nature: Neutral   FLAVOR: Bitter and salty
FUNCTIONS
1. Clears the Lungs, and resolves phlegm, lowers rising energy and relieves asthma, moisturises and dispels congestion.[1]
INDICATIONS
1. Lung Heat: Hemoptysis. Dysnea.[1]
2. Tumours, stomach-ache, pain in chest and sides.[1]
PREPARATIONS: Decoction  9-15 g.[1]
牡蛎肉 Mǔ lì ròu  Oyster meat generally  

Nature- neutral   FLAVOR: Sweet and salty
FUNCTIONS
1. Blood tonic.[4]
INDICATIONS
1. Insomnia, stress and nervousness.[4]
PREPARATIONS:

- Tuberculosis of the lymph nodes and goitre- Eat 15 to 25 oysters at meals.[4] Use oster source as seasoning if fresh oyster is not readily available.[4]


Ostrea gigas, O. cucullata, Crassostrea gigas- Pacific oyster 牡蠣  Mǔ lì- "Male oyster"   Oyster shells  Phyllum: Mullusca Class: Bivalve        
Nature: cool, cold   FLAVOR: Salty, astringent, harsh, acrid  CHANNEL: Liver, Kidney
FUNCTIONS
GROUP: Calm Spirit- Strong
1. Calm Spirit.
2. Soften hard lumps and disperse stagnated mass.[4] Breaks up congestion.[1]
3. Suppress Yang - Benefit Yin and suppress Yang. Moderates Yang.[1] Clears fever.[1] Solidify and constrict.[1] Obstructive.[4] 
4. Calm the Liver.
5. Astringe and invigorate the Kidney to preserve essence.
6. Antacid, analgesic, astringent.
7. Clears Lung Heat, resolved phlegm and stops coughing.[1]
INDICATIONS
1. Excess Liver Yang with Yin Deficiency. Manifesting as dizziness, tinnitus, irritability and insomnia, convulsion due to affection of Wind originated from excess Liver Yang and febrile diseases with consumption of Yin. Hypertension and dizziness.[1] Vertigo.
2. Lumps- Subcutaneous nodule, scrofula. Goitre.[4] Tuberculous cervical nodes.[1] Lymphatic tuberculosis.[4]
3. Kidney Deficiency manifested as seminal emission.[1,2,3] Premature ejaculation.[4] Enuresis. Menorrhagia. Metrorrhagia.[1] Leukorrhea. Vaginal bleeding and discharge.[4] Spontaneous perspiration and night sweat.[1,2,3,4] Insomnia, palpitation. Checks excessive perspiration and premature ejaculation.[4]
4. Hyperactivity- Peptic ulcer. Hyperacidity. Hyperthyroidism. Hydrosis.[1]
5. Goitre.[4]
6. Coughing and wheezing, Lung congestion, hemoptosis.[1]
PREPARATIONS: Decoction of pulverized shell 9-30 g. for each dose.[1] Powder can be injested.
External use- Appropriate amount.[3]
- Excessive gastric acid- Crush oyster shell into powder and wrap 15 g of the powder in a cloth. Boil in 3 cups water over low heat until the water is reduced to 1 cup. Drink as tea before a neal, once a day. Or grind the shell into very fine powder and take 3 g of the powder, each time with warm water, 3 times a day.[4]
Clinical study: Night sweat in pulmonary tuberculosis- Boil 20 g oyster shell in 500 ml water until the water is reduced to 200 ml (Sugar may be added, if desired.) Divide into 2 dosages and drink in the morning and in the evening for a few consecutive days. After the night sweat stops, the treatment continues for another 2 to 3 days to stablilize the effects. Herbal therapy may be used in combination, if no satisfactory results are obtained. In the 10 cases treated, after taking 2 to 3 dosages night sweat disappeared in 7 cases, 3 showed no obvious results, but 2 recovered after being treated in comination with other herbs. No side effects were observed.[4]

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.