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Kirkland Signature

Calcium 600 mg with Vitamin D3

1 Tablet × 2/day · 500 servings

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What it does

A combination of 2 label ingredients.

Calcium

Form not confirmedGrade —

Supports the maintenance of normal bones and teeth, muscle function and nerve signaling.

Vitamin D

vitamin d3Premium

Cholecalciferol (vitamin d3): Supports normal bones; D3 generally raises vitamin D blood levels more than comparable D2 doses.

DentalBone & JointImmune
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Ingredients (2)

IngredientDoseTarget/referenceForm

Other ingredients

MaltodextrinBinder

Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.

Medium Chain Triglyceride OilCarrier

Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent

Mineral OilEmollient

A highly refined petroleum-derived oil used as an occlusive emollient and lubricant

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

CholecalciferolVitamin

Vitamin D3 added in trace amounts for fortification in protein powders and other supplements

Croscarmellose SodiumDisintegrant

Cross-linked cellulose derivative used as a superdisintegrant

GlycerinHumectant

Sweet-tasting liquid used in soft capsules and liquids

HypromelloseCapsule

Plant-derived capsule material from cellulose

Lab testing

How to take it

With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron, Magnesium and Zinc
Split into 2 doses across the day

On the label

Suggested use: Adults - Take one (1) tablet two times daily, preferably with a meal.

Price check

No price yet

$10$20

What 552 vitamin D supplements cost

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

Not medical advice. Consult your healthcare professional.

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