Supplements

Calcium in supplements · page 299

14,548 supplements on the U.S. market list Calcium with an amount per serving. The official Tolerable Upper Intake Level for adults is 2,500 mg a day.

Tolerable Upper Intake Level (UL)

The highest daily amount that is unlikely to cause harm for almost all healthy people, from food, drinks and supplements combined.

Age	Men	Women	Pregnancy	Breastfeeding
0-6 months	1,000 mg	1,000 mg	—	—
7-12 months	1,500 mg	1,500 mg	—	—
1–3 years	2,500 mg	2,500 mg	—	—
4–8 years	2,500 mg	2,500 mg	—	—
9–13 years	3,000 mg	3,000 mg	—	—
14–18 years	3,000 mg	3,000 mg	3,000 mg	3,000 mg
19–50 years	2,500 mg	2,500 mg	2,500 mg	2,500 mg
51–70 years	2,000 mg	2,000 mg	—	—
71+ years	2,000 mg	2,000 mg	—	—

Source: NIH ODS Calcium Fact Sheet for Health Professionals, Table 3 (updated 2026-06-22).

Supplements with Calcium

14,548 shown · page 299 of 304

Kelp 225 mcgThompson · Tablet or Pill100 mg per serving

Calcium PlusOL Olympian Labs The Optimal Blend · Powder1,000 mg per serving

True Food Calcium & MagnesiumHigher Nature · Tablet or Pill120 mg per serving

Joint Health OriginalRedd Remedies · Capsule75 mg per serving

Liv-Cleanse FormulaYerba Prima · Tablet or Pill120 mg per serving

Pantothenic Acid 500 mgLife Extension · Capsule46 mg per serving

Brain Shield Gastrodin 300 mgLife Extension · Capsule20 mg per serving

AcidophilusCVS Health · Capsule109 mg per serving

Biotin 5,000 mcgFinest Nutrition · Capsule222 mg per serving

Potassium Citrate 99 mgVitamin World · Tablet or Pill24 mg per serving

Daily ProbioticDigestive Advantage · Capsule140 mg per serving

Tummy Relief + ProbioticSchiff Digestive Advantage · Tablet or Pill250 mg per serving

Glucosamine Sulfate 500 mgVitamin World · Capsule80 mg per serving

Alpha-Lipoic Acid 50 mgSundown Naturalist · Other (e.g. tea bag)120 mg per serving

Probiotic AcidophilusSundown Naturalist · Capsule109 mg per serving

5-HTPFinest Nutrition · Capsule128 mg per serving

Biotin 5000 mcgCVS Pharmacy · Capsule222 mg per serving

Probiotic AcidophilusVitamin World · Capsule141 mg per serving

His Daily Cleanse1 Up Nutrition · Capsule22 mg per serving

Super Biotin 5000 mcgVitamin World · Capsule222 mg per serving

Probiotic AcidophilusSchiff · Tablet or Pill31 mg per serving

Zygest Super Papaya PlusVitamin World · Other (e.g. tea bag)108 mg per serving

DHEA 25 mgEurovital Nutraceuticals · Tablet or Pill50 mg per serving

5-HTP 100 mgCVS Health · Capsule128 mg per serving

Calcium Citrate 300 mgThe Vitamin Shoppe · Tablet or Pill300 mg per serving

Dicalcium MalateSolgar · Tablet or Pill1,000 mg per serving

Calcium 125 mgDr. Clark Store · Capsule625 mg per serving

Calcium 600 mgMajor · Tablet or Pill600 mg per serving

Cal-CitrateBio-Tech Pharmacal · Capsule200 mg per serving

Calci-Chew 500 mg CherryRugby · Tablet or Pill500 mg per serving

Calcium Citrate 350 mgNatural Factors · Tablet or Pill350 mg per serving

Pure Calcium GluconateFreeda · Capsule300 mg per serving

Chewable Calcium Carbonate 260 mgFreeda · Tablet or Pill1,040 mg per serving

Pure Calcium Citrate 250 mgFreeda · Tablet or Pill1,000 mg per serving

Calcium Citrate 500 mgDr. Clark Research Association Dr. Clark Zentrum · Capsule240 mg per serving

Calcium Citrate 1000 mgGNC · Other (e.g. tea bag)1,000 mg per serving

CalciumZemvelo · Liquid144 mg per serving

CalciumMiller Pharmacal Group · Tablet or Pill280 mg per serving

Calcium CitrateDouglas Laboratories · Tablet or Pill250 mg per serving

Calcium CitrateAllergy Research Group · Capsule150 mg per serving

Calcium CitrateNutriCology · Capsule150 mg per serving

Calcium CitratePuritan's Pride · Other (e.g. tea bag)1,000 mg per serving

Label data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).