Calcium channel antagonist possessing an inhibitory action against secretion of parathyroid hormones and a use thereof
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United States of America Patent
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Nov 5, 2002
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N/A
app pub date -
Dec 13, 2000
filing date -
May 21, 1997
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Abstract
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.degree. 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.
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