🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

1 Tablet(s) Serving Size
250 Servings
Single Vitamin and Mineral Product Type
50% 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)

Other Ingredients

Calcium Carbonate Cellulose Gel Maltodextrin Croscarmellose Sodium Magnesium Stearate Titanium Dioxide Polyethylene Glycol Triethyl Citrate Polysorbate 80 Corn Starch Gelatin Yellow 6 Lake Vitamin D3

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (99% of products) Structure/Function (85% of products) Nutrient (70% of products) Approved Health (4% of products)

Target Groups

Adult (18 - 50 Years) Seniors/Mature (>50 Years)

Product Information

📋 Directions for Use

When to take Anytime Take twice daily with a meal Suggested Use: Take one tablet two times daily, preferably with a meal.

⚠️ Warnings & Precautions

Caution: If you are pregnant, nursing, or taking any medications, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of the reach of children.

🧪 Formulation Notes

For strong bones and teeth

Vitamin D assists in the absorption of Calcium

Calcium Carbonate 600 mg. Vitamin D3 400 IU

USP Verified

Kirkland Signature Calcium 600 mg + D3 helps support strong bones. The addition of vitamin D helps your body to absorb calcium better.

May reduce the risk of osteoporosis

Calcium supports the growth of strong bones and teeth.

No artificial flavors. No preservatives. No yeast. No gluten.

This item is verified by the United States Pharmacopeia (USP) which is an independent, scientific, non-profit organization that sets strict quality and purity standards for dietary supplements manufactured and distributed worldwide. The USP's drug standards are enforceable in the United States by the Food and Drug Administration.

Additional Information

USP Verified Dietary Supplement

Recommended daily Allowances (RDA) for calcium were established by the Institute of Medicine (IOM) based on age and gender. Men between 19-70 years old require 1,000 mg calcium daily, whereas men over 71 years need 1,200 mg per day. Women between the ages of 19-50 years old need 1,000 mg calcium per day and those over 50 years old need 1,200 mg per day. The Tolerable Upper Intake Level (UL) of calcium per men and women older than 18 years of age is 2,500 mg per day.

Our formulation has not changed but the label may look different now. New FDA regulations are bringing changes to the Supplement Facts panel, including updated daily values, changes to units of measure and more. To help you understand the changed we have provided both the old and new Supplement Facts panel for your comparison below.

Store at room temperature, tightly closed. Avoid excessive heat.

Since 1995, the Kirkland Signature brand has been providing high quality supplements at a great member value. Kirkland Signature vitamins, minerals, and supplements are made from carefully selected ingredients from trusted suppliers. The supplements are manufactured in accordance with the Good Manufacturing Practice standards. Additionally, many of the items are verified by the United States Pharmacopeia (USP) which is an independent, scientific, non-profit organization that sets strict quality and purity standards for dietary supplements.

Product Details

DSLD Entry Date 2022-08-23
Product Type Single Vitamin and Mineral
Form Tablet or Pill
DSLD ID 275996
Data Updated 2026-04-11

Research Evidence

872 Research Sources
53 Avg Quality Score
309 Meta Analysis
309 Clinical Trial
111 Rct
71 Systematic Review
55 Guideline
4 Cochrane Review
4 Regulatory Source
2 Other
2 Narrative Review
2 Observational
1 Openfda Safety
A Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis
Meta Analysis The Cochrane database of systematic reviews 2009
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2014
A Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men
Meta Analysis The Cochrane database of systematic reviews 2014
A Vitamin D supplementation for prevention of cancer in adults
Meta Analysis The Cochrane database of systematic reviews 2014
A Interventions for preventing falls in older people in care facilities and hospitals
Meta Analysis The Cochrane database of systematic reviews 2018
A Drugs for preventing lung cancer in healthy people
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2011
A High prevalence of vitamin D deficiency in Asia: A systematic review and meta-analysis
Meta Analysis Critical reviews in food science and nutrition 2023
A The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2023
A Interventions for preventing falls in older people living in the community
Meta Analysis The Cochrane database of systematic reviews 2009
View all evidence for Vitamin D →

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