So the takeaway from this research which I’ll explain in a minute is that you want to take your calcium supplement in a dose of about 350 mg twice daily.The reasons for this was dramatically shown in a study that compared the bioavailability and the absorption of calcium from calcium carbonate or calcium citrate supplements in 37 healthy men and women. Once again, as I’ve discussed in other studies, the absorption of calcium carbonate and calcium citrate was identical when these supplements were taken with a meal. As discussed, calcium carbonate requires the presence of some stomach acid so the calcium can be solubilized and best absorbed, while calcium citrate does not require this. But even a snack will provide you with enough hydrochloric acid for you to absorb as much calcium from calcium carbonate as calcium citrate. The really interesting fact revealed by this latest study is that more calcium was absorbed when a lower dose was taken at one time. What they did with these 37 healthy men and women was they gave either a 1000 mg dose of calcium at one time or they gave 300 mg doses, twice daily. And they found that when 1000 mg was taken all at once, the subjects only absorbed 28.4% of elemental calcium from the dose. But when a 300 mg dose was given, they absorbed 36% of the calcium from that dose. And the researchers then determined that the maximum dose of elemental calcium that should be taken at one time, for the best absorption result, was 500 mg, no more than 500 mg. And that a dose of about 350 mg taken twice daily, is likely to provide the best absorption of elemental calcium from a supplement via calcium citrate or calcium carbonate. I hope this helps you get the most out of your supplements, whichever form of calcium you choose to use. Thanks for tuning in!
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