FIELD: medicine; pharmacology.
SUBSTANCE: touch-and-heal herb (Hypericum perforatum L.) is extracted. Ethyl alcohol concentrated within 60...90% is used as extracting agent. Raw material and extracting agents are taken in proportion as follows 1:11 ÷ 1:13.
EFFECT: invention enables to carry out specified value and increase flavonoid yield.
8 ex, 2 tbl
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