• 10 Quality rank of 20
  • 11 Value rank of 20
  • 85.1 Score overall

Ratings and Key Data

One serving of GNC Vitamin D3 measured 1300 IU of vitamin D3, 30% over its label claim. While this exceeded the 600 IU Recommended Dietary Allowance (RDA), it did not near the 4000 IU Upper Limit (UL).

Label Accuracy
Product Purity
Nutritional Value
Ingredient Safety
Projected Efficacy
  • Analytical Tests 9
  • Serving Size 1 Tablet
  • Price/Serving $0.08
  • Vitamin D/Serving 1300 IU (as cholecalciferol/D3)
  • Watchlist Ingredients N/A
  • Purity Tests Pass (heavy metal content below 1 PPM)