Calcium Citrate

product on market Tablet or Pill NOW 🟢 Safety: 100/100
Brand: NOW
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 67% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Tablet(s) Serving Size
50 Servings
Other Combinations Product Type
67% Evidence Coverage

Supplement Facts — Evidence Check

10 mcg (50% DV)
✅ Within RDA (0.7× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.01mg UL 0.1mg
Calcium
600 mg (46% DV)
300 mg (71% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 300mg
15 mg (136% DV)
✅ 1.4× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 15mg UL 40mg
1 mg (111% DV)
✅ 1.1× RDA — within safe limits 📚 36 studies (Tier A: 0, B: 11)
RDA 0.9mg This product: 1mg UL 10mg
5 mg (217% DV)
✅ 2.2× RDA — within safe limits 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 5mg UL 11mg

Other Ingredients

Hydroxypropyl Cellulose Vegetarian Coating Croscarmellose Sodium Silicon Dioxide Magnesium Stearate Stearic Acid

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (100% of products) Structure/Function (81% of products) Nutrient (71% of products) Approved Health (13% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Kosher Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested Usage: Take 2 tablets daily, preferably in divided doses, with food.

⚠️ Warnings & Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

🧪 Formulation Notes

Calcium citrate is a readily digested and absorbed form of calcium, a mineral that is necessary for the maintenance of bone health. Vitamin D, magnesium, zinc, copper, and manganese have been included for their essential roles in bone metabolism.

Natural color variation may occur in this product.

Supports bone health

Bone metabolism formula with mineral & vitamin D-2 Highly bioavailable calcium

Non-GMO

Vegetarian/vegan

Triangle K

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Additional Information

Store in a cool, dry place after opening.

Triangle K

Minerals Family owned since 1968.

GMP Quality Assured

Product Details

UPC / SKU 7 33739 01230 2
DSLD Entry Date 2019-11-21
Product Type Other Combinations
Form Tablet or Pill
Brand NOW
DSLD ID 210410
Data Updated 2026-04-11

Research Evidence

511 Research Sources
57 Avg Quality Score
266 Meta Analysis
95 Systematic Review
76 Rct
49 Clinical Trial
12 Guideline
4 Regulatory Source
2 Cochrane Review
2 Other
2 Narrative Review
1 Openfda Safety
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018
PubMed DOI Cochrane
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI Cochrane
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI Cochrane
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018
PubMed DOI Cochrane
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025
PubMed DOI Cochrane
A First-line drugs for hypertension
Meta Analysis The Cochrane database of systematic reviews 2018
PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008
PubMed DOI Cochrane
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023
PubMed DOI Cochrane
A Beta-blockers for hypertension
Meta Analysis The Cochrane database of systematic reviews 2017
PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI
View all evidence for Calcium →

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