About Calcium
Official resources
Fact sheets from the NIH Office of Dietary Supplements related to this ingredient group.
Dietary Supplement Label Database
Ingredient group data in NutriNav is aligned with the NIH Dietary Supplement Label Database (DSLD).
- DSLD group id
- 7026
At a glance
Suggested daily
1000 mg for adults; 1200 mg for women over 50 and men over 70.
Max safe daily
2500 mg for adults; 2000 mg for individuals aged 51 and older.
Approval status
GRAS
Compare All Forms
47 formsCompare supplement forms of Calcium by absorption quality and what your body actually gets from each:
Also appears on labels as
Additional names seen on supplement labels for forms of this ingredient (beyond the main aliases above).
albion laboratories calcium chelazome, Calcium casein, calcium cfmsa chelate, Calcium citrate (tetrahydrate), Calcium Citrate-Malate, Calcium Citrate Malate Complex, Calcium citrate tribasic, calcium hydrolyzed protein chelate, Casein, potassium salt, Casein-calcium salt, Caseinate, Caseinate, sodium, Casein potassium, Casein sodium salt, CCM, Citracal (brand name form), Dicalcium Phosphate (related), Milk Protein Caseinate, Milk protein isolate (sodium form), Potassium casein, protein calcium cholate, Sodium casein, Tricalcium dicitrate, Tricalcium dicitrate tetrahydrate, Tricalcium Phosphate (related)
Type: Minerals
Inorganic elements essential for various physiological functions including bone formation, nerve function, and enzyme activity.
Absorption: Minerals often compete for absorption. Chelated forms generally have better bioavailability.
Interactions: High doses of some minerals can interfere with absorption of others. Some minerals can interact with medications.
Watch out for
Possible interactions or cautions — talk to a healthcare provider if unsure.
- Calcium may interfere with the absorption of certain medications, including antibiotics like tetracycline and fluoroquinolones.
- High calcium intake can affect the absorption of magnesium and zinc.
Potential Benefits
Benefits associated with Calcium forms:
And 13 more benefits...
Potential Side Effects
Side effects associated with Calcium forms:
And 3 more side effects...