• 19 Quality rank of 20
  • 20 Value rank of 20
  • 71.1 Score overall

Ratings and Key Data

One serving of Natrol Vitamin D3 measured 2900 IU of vitamin D3, 45% 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 45%.

Label Accuracy
Product Purity
Nutritional Value
Ingredient Safety
Projected Efficacy
  • Analytical Tests 9
  • Serving Size 1 Tablet
  • Price/Serving $0.13
  • Vitamin D/Serving 2900 IU (as cholecalciferol/D3)
  • Watchlist Ingredients Sucralose
  • Purity Tests Pass (heavy metal content below 1 PPM)