The best-absorbed form of calcium from a pill is a calcium salt like carbonate or citrate. Calcium gluconate and calcium lactate are absorbed well by pregnant women. Seniors absorb calcium lactate, gluconate and citrate well. Calcium citrate can be taken between meals otherwise take other calcium supplements with each meal instead of all at once.
The recommended daily dose of calcium per day is 1,000 milligrams for persons 19 to 50 and 1,200 milligrams for persons 51+ years. Read the bottle label for the amount of calcium. Some will list the amount of calcium carbonate compound rather than the amount of elemental calcium. Milk and milk products are still the best source of calcium since they also contain vitamin D, riboflavin (B2), phosphorus, potassium, vitamin A, and protein.
Do not take a bone meal or dolomite calcium as a supplement. Bone meal calcium comes from slaughterhouse animals’ bones. Both may be contaminated with toxic metals such as arsenic, mercury, lead, cadmium, and others. Animals, as well as people, store heavy metal toxins in their bones. Any heavy metals you have ever been exposed to are stored in your bones. Grinding them up doesn’t rid the bones of heavy metals. Leaded paint and leaded gas have added greatly to our lead exposure.