Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets

Common questions

Is Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets healthy?

Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets scores 68/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This supplement contains beneficial ingredients like calcium carbonate and cholecalciferol, which support bone health and calcium absorption.

How processed is Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets?

Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets is NOVA Group 4: Ultra-Processed Foods.

Which ingredients drive Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets' score?

In Scout's ingredient-by-ingredient analysis, Cholecalciferol, Medium Chain Triglycerides count in its favor; Maltodextrin, Mineral Oil are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Kirkland Signature Calcium 600 mg Plus Vitamin D3 - 500 Tablets

Kirkland Costco
68 Fair

Analysis updated July 2026 · How Scout scores

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At a glance

Beneficial ingredients 2
Harmful ingredients 2
Owned by Costco
Category Vitamins and Minerals
Summary

This supplement contains beneficial ingredients like calcium carbonate and cholecalciferol, which support bone health and calcium absorption. However, the presence of maltodextrin and mineral oil, which are considered less desirable due to their processing and potential health concerns, affects the overall formulation quality. The product also includes several additives, which contribute to its processing level.

Key ingredients 8

Cholecalciferol
Good

Cholecalciferol, or Vitamin D3, is crucial for calcium absorption and bone health. It is the preferred form of Vitamin D due to its superior bioavailability. It also supports immune function and overall health.

Benefits

Enhances calcium absorption and supports immune system function.

Medium Chain Triglycerides
Good

Medium chain triglycerides (MCTs) are fats that are rapidly absorbed and used for energy. They are often derived from coconut oil and are known for their potential to support weight management and energy levels. MCTs are considered beneficial for their quick energy conversion.

Benefits

Supports energy production and may aid in weight management.

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Calcium Carbonate
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

Excessive intake may lead to kidney stones or impaired absorption of other minerals.

Benefits

Essential for maintaining strong bones and teeth, and supports muscle function.

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Croscarmellose Sodium
Neutral

Croscarmellose sodium is used as a disintegrant in tablets to help them dissolve properly. It is generally considered safe and effective for its intended use. It does not contribute any nutritional value.

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Glycerin
Neutral

Glycerin is a humectant that helps maintain moisture in products. It is generally recognized as safe for consumption. It is often used in food and pharmaceutical products for its stabilizing properties.

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Hydroxypropyl Methylcellulose
Neutral

Hydroxypropyl methylcellulose is a plant-derived thickener and emulsifier. It is commonly used in supplements to form capsules and is considered safe for consumption. It does not provide any nutritional benefits.

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Maltodextrin
Bad

Maltodextrin is a highly processed carbohydrate used as a filler or thickener. It has a high glycemic index, which can cause spikes in blood sugar levels. It is often used in processed foods due to its low cost and neutral taste.

Risks

May contribute to blood sugar spikes and is not suitable for individuals with insulin sensitivity.

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Mineral Oil
Bad

Mineral oil is a petroleum-derived product used as a lubricant and laxative. It is not absorbed by the body and can interfere with the absorption of fat-soluble vitamins. Its use in food products is controversial due to its origin and potential health concerns.

Risks

May interfere with the absorption of fat-soluble vitamins and is not recommended for regular consumption.

See more about Mineral Oil →

Processing

Group 4 · Ultra-processed

Ultra-Processed Foods

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