回复：了解活性钙的JM能不能说说

These days pure coral calcium from Okinowa,Japan is more popular. Coral calcium has a Ca:Mg ratio as 2:1 which has been claimed with fast and high absorbtion.It also has 75 essential minerals. The extra calcium will be excreted and not accumulated in body.I don't know what is 活性钙. Barefoot brand maybe is the most famous. But they are too expensive. I buy from www.naturalbiologylab.com for $99/12bottles with 99cents shipping. They are good.