A method of providing K2-rich poria cocos extract. The method (a) mixing gypsum with a solvent to obtain a first mixture; (b) alkalizing the first mixture to obtain a second mixture; (c) acidifying the second mixture to obtain a third mixture; (d) alkalizing the third mixture to obtain a fourth mixture having a pH value of at least 7; And (e) neutralizing the fourth mixture, Wherein K2 is at least one of taurosoloxane, dihydrotoluoloxane, polyphenylene acid C, and 3-epi-dihydroxlurous acid.
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