Each bottle of Twinlab Calcium Citrate contains 60 chewable calcium wafers in the form of calcium citrate, which does not require stomach hydrochloric acid for absorption. This means that Calcium Citrate is more readily absorbed and utilized by the body and can also be taken on an empty stomach. Calcium citrate never leads to the formation of calcium kidney stones. Another unique advantage that comes with taking calcium citrate is that unlike other forms of calcium, it never blocks iron absorption.