Supplements

Calcium in supplements · page 291

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 291 of 304

PancreatinAbsorb Health · Capsule100 mg per serving

B-2 100 mg RiboflavinCarlson · Tablet or Pill72 mg per serving

Milk Thistle (Silymarin)Mason Natural · Capsule65 mg per serving

Bitter MelonSource Naturals · Capsule45 mg per serving

Mega Strength Beta Sitosterol 375 mgSource Naturals · Tablet or Pill22 mg per serving

Hydroxy CitrateBio-Tech Pharmacal · Capsule95 mg per serving

Calcium D-Glucarate 250 mgThe Vitamin Shoppe · Tablet or Pill55 mg per serving

GABA 750 mgThe Vitamin Shoppe · Tablet or Pill37 mg per serving

Oceanic SilicaSolgar · Capsule200 mg per serving

Vitamin K 100 mcgGNC · Tablet or Pill50 mg per serving

TravelBioticNatural Factors · Capsule40 mg per serving

Potassium Citrate 99 mgNatural Factors · Tablet or Pill36 mg per serving

Garcinia CambogiaNatural Factors · Tablet or Pill232 mg per serving

L-Tyrosine 500 mgNatural Factors · Capsule50 mg per serving

Biotin 1000 mcgNatural Factors · Capsule25 mg per serving

TravelBioticNatural Factors · Capsule40 mg per serving

Formula 16 Bone SupportNESS Nutritional Enzyme Support System · Capsule60 mg per serving

Formula 416 Protease + CalciumNESS Nutritional Enzyme Support System · Capsule60 mg per serving

Vinpocetine 10 mgThe Vitamin Shoppe · Tablet or Pill50 mg per serving

Biotin 5000 mcgGNC · Capsule170 mg per serving

Vitamin B-2 100 mgGNC · Tablet or Pill46 mg per serving

Vitamin B-12 1500 mcgGNC · Capsule49 mg per serving

Melatonin 3 mg Timed-ReleaseGNC · Tablet or Pill119 mg per serving

Biotin 600 mcgGNC · Tablet or Pill95 mg per serving

Melatonin 5 mgGNC · Tablet or Pill45 mg per serving

Pantothenic Acid 500 mgGNC · Capsule52 mg per serving

L-Glutamine 1000 mgGNC · Other (e.g. tea bag)81 mg per serving

Vitamin B-12 1000 mcg Timed-ReleaseGNC · Other (e.g. tea bag)220 mg per serving

Chromium Picolinate 200 mcgGNC · Other (e.g. tea bag)106 mg per serving

Caffeine 200 mgNova Nutritions · Tablet or Pill25 mg per serving

Biotin 10,000 mcgNova Nutritions · Capsule66 mg per serving

PQQ Pyrroloquinoline Quinone 20 mgHealth Thru Nutrition Naturally · Capsule108 mg per serving

Creatine HCl 189GNC AMP Advanced Muscle Performance · Tablet or Pill132 mg per serving

PQQEpic 4 Health · Capsule108 mg per serving

EstroBalanceNature's Way · Tablet or Pill340 mg per serving

Melatonin 3 mgBreckenridge Pharmaceutical · Tablet or Pill22 mg per serving

Biotin 5000 mcgMeijer · Capsule200 mg per serving

DHEA 50 mgMeijer · Capsule39 mg per serving

Cinnamon Extract 1,000 mgNatrol · Tablet or Pill60 mg per serving

Green Tea 300 mgWindmill · Other (e.g. tea bag)96 mg per serving

Specially-Coated Bromelain 500 mgLife Extension · Tablet or Pill75 mg per serving

Bioflavonoid ComplexDouglas Laboratories · Tablet or Pill100 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).