One serving of Kirkland Signature Extra Strength Vitamin D3 measured 2200 IU of vitamin D3, 10% over its label claim. Due to higher than claimed levels of vitamin D, two servings of this product also exceed the 4000 IU daily Upper Limit (UL) by 10%.
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Label Accuracy
Product Purity
Nutritional Value
Ingredient Safety
Projected Efficacy
Analytical Tests | 9 |
Serving Size | 1 Tablet |
Price/Serving | $0.02 |
Vitamin D/Serving | 2200 IU (as cholecalciferol/D3) |
Watchlist Ingredients | Caramel Color |
Purity Tests | Pass (heavy metal content below 1 PPM) |