Calcium 600 mg. with Vitamin D3, 500 Tablets
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Vitamin D31526 systematic reviews · 3105 randomised trials | 10 mcg |
| Calcium702 systematic reviews · 3290 randomised trials | 600 mg |
Certifications & Testing
Other Ingredients
Calcium Carbonate, Maltodextrin, Cholecalciferol, Croscarmellose Sodium, Glycerin, Hydroxypropyl Methylcellulose, Medium Chain Triglycerides, Mineral Oil
Recommended Use
Suggested use: Adults - Take one (1) tablet two times daily, preferably with a meal.
Warnings
Caution: Pregnant or nursing women, individuals taking medication(s) or persons who have a health condition should consult their physician before using this product. Keep out of the reach of children. Important: Tamper-evident seal under cap. Do not use if printed seal is broken or missing.
Frequently Asked Questions
What is Kirkland Signature Calcium 600 mg. with Vitamin D3, 500 Tablets's Formulate score?
Kirkland Signature Calcium 600 mg. with Vitamin D3, 500 Tablets scores 85 out of 100 (grade A-) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Kirkland Signature Calcium 600 mg. with Vitamin D3, 500 Tablets worth it?
Kirkland Signature Calcium 600 mg. with Vitamin D3, 500 Tablets scores 85/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Kirkland Signature Calcium 600 mg. with Vitamin D3, 500 Tablets?
Each serving contains Vitamin D3 (10 mcg), Calcium (600 mg). Serving size: 1 Tablet(s). 500 servings per container.
How do I take calcium 600 mg. with vitamin d3, 500 tablets?
Suggested use: Adults - Take one (1) tablet two times daily, preferably with a meal.
Who makes Calcium 600 mg. with Vitamin D3, 500 Tablets?
Calcium 600 mg. with Vitamin D3, 500 Tablets is made by Kirkland Signature. See Formulate's full grade and product lineup for Kirkland Signature on its brand page.
Is Kirkland Signature Calcium 600 mg. with Vitamin D3, 500 Tablets third-party tested?
Kirkland Signature lists the following certifications and testing for this product: USP Verified, Gluten-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.