Advantages of Different Forms of Calcium Each of these forms of calcium has distinct advantages based on your personal needs. If you are taking many medications or have a chronic medical condition, ask your healthcare provider if the calcium you are taking can interfere with your medication or if calcium loss is a side effect of the medication. You should aim for about 500 mg of calcium with each meal. This is about the maximum amount of calcium the body can absorb at any one time. Look at the serving size and amount of calcium provided in that serving.
Gastric acid is necessary for the absorption of most forms of calcium.
If you do not have adequate gastric acid in your stomach, it is recommended that you consider taking a calcium citrate supplement. Take this supplement between meals. Again, calcium citrate is a good supplement for you. Take between meals. If you want to save money, consider using generic brands of calcium carbonate.