The recommended calcium for best absorption
for us is calcium citrate. Here's this from the Viactiv website:
Q. How much calcium carbonate is contained in one VIACTIV® Calcium Soft Chew?
A. Each VIACTIV® Calcium Soft Chew contains 500 mg of elemental calcium from 1,250 mg of calcium carbonate.
Q. How well absorbed is the calcium in VIACTIV® Calcium Soft Chews?
A. Calcium carbonate, nature's most concentrated source of calcium, delivers 500 mg of elemental calcium in each VIACTIV® Calcium Soft Chew. The calcium in VIACTIV® has been clinically demonstrated to be absorbed as well as the calcium from low-fat (1%) milk.
Q. What is the source of the calcium in VIACTIV® Calcium Soft Chews?
A. Calcium carbonate.
Some information from
Nutrition Advice by Registered Dietitians - HealthCastle.com
Calcium Citrate e.g. Citracal or Solgar:
Absorption: Calcium is best absorbed in an acidic environment, hence calcium citrate is the best absorbed supplemental form of calcium. It
does not require extra stomach acid for absorption, hence we may take it anytime in a day, even on an empty stomach.
Calcium content: Calcium Citrate usually provides less elemental calcium per pill than Calcium Carbonate, therefore one may need to take a relatively more numbers of pills per day to meet the needs.
Pill Size: Calcium Citrate is usually
small in capsule form.
If you suffer from acid stomach, it is best to avoid Calcium Citrate.
Calcium Carbonate e.g. Tums or Caltrate
Absorption: Calcium Carbonate is alkaline based, it
requires extra stomach acid for better absorption, hence it is best taken right after meals or with a glass of acidic juice such as orange juice.
Calcium Content: Calcium Carbonate is the most prevalent calcium supplements in the market . It provides more elemental calcium than Calcium Citrate hence you may not need take as many pills.
Pill Size: Calcium Carbonate
usually comes in a bigger tablet, some people may find it harder to swallow.
Since we don't have much of a stomach any more, we don't have much stomach acid, so a calcium that doesn't need it to be absorbed has a lot going for it from our point of view.
Class dismissed. There'll be a test on this later!!
CT