Windmill D3 Cholecalciferol 25 mcg supplement bottle
Windmill

D3 Cholecalciferol 25 mcg

What We Researched
2 active ingredients analyzed · 11 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
68
Product Score Fair
74
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (as Cholecalciferol) 25 mcg 125%
Calcium (as Dicalcium Phosphate) 75 mg 6%
Bioavailability Very Good

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
  • Calcium (as Dicalcium Phosphate) Fair
Other Ingredients Good

Fillers & Additives

  • Dicalcium Phosphate
  • Stearic Acid
  • Microcrystalline Cellulose
  • Silica
  • Croscarmellose Sodium
  • Magnesium Stearate
  • Water
  • Hypromellose
  • Glycerin
  • Talc High
  • Carnauba Wax
Efficacy Fair

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 25 mcg Effective
  • Calcium (as Dicalcium Phosphate) 75 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol) 25 mcg 125%
Calcium (as Dicalcium Phosphate) 75 mg 6%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Water Safe

Dissolves and carries water-soluble ingredients.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Talc Avoid

It is used to improve powder flow and prevent clumping.

Carnauba Wax Safe

Provides a glossy, protective coating on tablets.

Price Comparison

Target $11.87 $0.12 / serving
Best Price

Price History

Tracked across major retailers. Updated periodically.

$14$13$12$11$10 $11.87
Target

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Windmill

Founded 1972 · West Caldwell, New Jersey, United States · 150 products · windmillvitamins.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source

Violation History

4 incidents
Prop 65 Lead2024-11-15Source
Prop 65 Lead and Cadmium2018-10-01Source
Lawsuit Deceptive packaging with excessive empty space (slack-fill) in their Super Greens product containers.2018Source
Fda Warning Violations of Current Good Manufacturing Practices (cGMP) and making drug claims for several of their supplement products.2014-10-07Source
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Frequently Asked Questions
Is Windmill D3 Cholecalciferol 25 mcg a good supplement?

Windmill D3 Cholecalciferol 25 mcg received a product quality score of 68/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients with 100 servings per container. Of the 11 inactive ingredients, 10 are rated safe and 0 are flagged for review. The manufacturer, Windmill, holds a brand trust score of 74/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Windmill D3 Cholecalciferol 25 mcg?

Windmill D3 Cholecalciferol 25 mcg contains 2 active ingredients: Vitamin D3 (as Cholecalciferol) (25 mcg), Calcium (as Dicalcium Phosphate) (75 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Windmill D3 Cholecalciferol 25 mcg safe to take?

Windmill D3 Cholecalciferol 25 mcg has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Windmill a trustworthy supplement brand?

Windmill receives a brand trust score of 74/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1972 and headquartered in West Caldwell, New Jersey, United States, the company offers 150 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Windmill has 4 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.