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Pteria margaritiferia
PEARL
Pearls -- the result of an
oyster, clam or mussel's self-protection against an invader -- are similar
in composition to the lining of shell. As a powder, they are given by
Chinese physicians for spasms, convulsions, headaches, and insomnia.
Pearls form as a result of an oyster, clam,
or mussel's efforts to protect itself from foreign bodies, often parasites, that get inside the shell.
The animal completely encloses the enemy in several layers of the same pearly substance that lines the shell.
The pearls used medicinally are from sea rather than fresh water shells.
PARTS USED
Whole pearl.
ACTIVE INGREDIENTS
Calcium carbonate; magnesium
carbonate; silica.
ACTIONS
Sedative; helps liver function.
MEDICINAL USE
Chinese physicians prescribe pearl for spasms, convulsions, headache, and insomnia.
PREPARATIONS
Powder.
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