Abstract

A short-term study examined the bioavailability of calcium (Ca) from a high Ca (4.87% Ca) dried whey fraction, as compared to Ca in Ca carbonate, Ca lactate, and a commercial (brandname) Ca supplement (contained Ca citrate). Young rats were used as the test model, and bioavailability was assessed based on total femur Ca, percent femur Ca, and Ca absorption data. Compared to Ca carbonate (bioavailability defined as 100%), the bioavailability of Ca averaged 101.0% in Ca lactate, 105.2% in the commercial supplement, and 109.5% in the whey fraction.

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