口服钙剂除可补钙外还可用来使大便硬结。镁剂除作为制酸药和泻药外,近来也被用于口服补镁。这两种矿物质通常在食物中摄取有限,不会引起摄取过剩。但作为补充剂其摄取的安全量必须加以确定。《日本人营养需要量第 6次修定》中规定成人的允许上限是:钙 2500mg/日,镁 700mg/ In addition to oral calcium can also be used to make calcium stool induration. In addition to being an antacid and laxative, magnesium has recently also been used as an oral magnesium supplement. These two minerals are usually limited in food intake and do not cause over ingestion. However, the amount of safe intake as a supplement must be determined. “Japanese Nutritional Requirements 6th revised” in adults is allowed to set the upper limit is: calcium 2500mg / day, magnesium 700mg /