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AssigneeFujix, Inc.
InventorsRanko Inoue, Takeshi Inoue, Takuo Fujita, Yoshihisa Kudoh, Seiichi Yamagiwa
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Disclosed is a calcium channel antagonist effective as a single substance for attaining dual purposes of inhibiting secretion of parathyroid hormones and of promoting absorption and utilization of calcium in human body as well as a process for preparing the calcium channel antagonist. According to the present invention. the calcium channel antagonist is prepared by baking a calciferous material of plant origin at a temperature of 500-1000° C. under reduce pressure or vacuum and extracting the baked material with and acidic substance. The calcium channel antagonist may be incorporated with a conventional calcium preparations to enhance bioavailability of calcium. Further, the calcium channel antagonist of the present invention may be processed to calcium preparations in the form of porous granules.
A calcium-containing preparation for inhibiting secretion of parathyroid hormones and promoting absorption and utilization of calcium, which comprises a calcium-containing extract obtained by extracting calcium from a calcium-containing material of plant origin with a sulfuric acid-containino solvent, and filtering the sulfuric acid-containing solvent.
Dependencies are inferred from the claim text.