Kirkland Signature Extra Strength D3 50 mcg (2000 IU)
by Kirkland Signature
High-quality vitamin D3 supplement with excellent potency and bioavailability at an exceptional value. Third-party tested for purity with minimal unnecessary fillers, making it a solid choice for vitamin D supplementation.
- Vitamin D3 (Cholecalciferol) – beneficial · The most bioavailable form of vitamin D, essential for bone health, immune function, and overall wellness.
- Microcrystalline Cellulose – safe · Inert plant-derived filler that helps bind the capsule contents, generally recognized as safe.
- Gelatin – safe · Animal-derived capsule material that's well-tolerated but not suitable for vegetarians.
- Magnesium Stearate – safe · Flow agent that prevents ingredients from sticking to machinery during manufacturing.
- Silicon Dioxide – safe · Anti-caking agent derived from silica, prevents clumping of ingredients.
High bioavailability D3 form
Appropriate 2000 IU dosage
Third-party tested for purity
Minimal unnecessary fillers
Excellent value proposition
USP verified quality
Gelatin capsules not vegetarian-friendly
Contains magnesium stearate
Some people may need higher doses
No cofactors like K2 included
About This Analysis
This ingredient analysis for Kirkland Signature Extra Strength D3 50 mcg (2000 IU) was performed by Truelabel, an AI-powered food scanner that grades products from A (excellent) to F (failing) based on ingredient quality. The analysis covers seed oil content, ultra-processed ingredients, preservatives, artificial colors, allergens, and potential health risks including cancer risk, hormonal disruption, and gut irritation scores.
Category: Supplement