Antipruritic agents and antipruritic compositions thereof
申请人:Shiseido Company Ltd.
公开号:US05401770A1
公开(公告)日:1995-03-28
An antipruritic agent comprising a zinc-amino acid complex, and an antipruritic composition containing said antipruritic agent at a concentration of 2.6.times.10.sup.-3 to 2.6.times.10.sup.-1 M.
The present invention provides methods for preparation of metallic amino acid chelates that are electrically neutral and free of interfering ions, by reacting a metal carbonate and an acidic amino acid in an aqueous solution, and the uses of said metallic amino acid chelates. The metallic amino acid chelates can be added to a product such as medical supplies, foods, beverages, cosmetics, feeds, etc., with maintaining the stability of the product at a variety of temperature and pH ranges and also having no effect on the properties of the product, including taste and appearance.