Windmill Stress Formula supplement bottle
Windmill

Stress Formula Review

What We Researched
10 active ingredients analyzed · 7 inactive ingredients decoded · 2 brand certifications checked · Last updated: Aug 2026
91
Product Score Excellent
83
Brand Score Good

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ascorbic Acid, Niacinamide Ascorbate) 500 mg 833%
Vitamin E (as DL-Alpha-Tocopheryl Acetate) 30 IU 100%
Thiamine (as Thiamine Mononitrate) 10 mg 667%
Riboflavin 10 mg 588%
Niacin (as Niacinamide, Niacinamide Ascorbate) 100 mg 500%
Vitamin B6 (as Pyridoxine Hydrochloride) 5 mg 250%
Folate (as Folic Acid) 400 mcg 100%
Vitamin B12 (as Cyanocobalamin) 12 mcg 200%
Biotin 45 mcg 15%
Pantothenic Acid (as D-Calcium Pantothenate) 20 mg 200%
Bioavailability Good

Absorption Rating

  • Vitamin C (as Ascorbic Acid, Niacinamide Ascorbate) Fair
  • Vitamin E (as DL-Alpha-Tocopheryl Acetate) Fair
  • Thiamine (as Thiamine Mononitrate) Fair
  • Riboflavin Good
  • Niacin (as Niacinamide, Niacinamide Ascorbate) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Folate (as Folic Acid) Fair
  • Vitamin B12 (as Cyanocobalamin) Fair
  • Biotin Good
  • Pantothenic Acid (as D-Calcium Pantothenate) Good
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • Microcrystalline Cellulose
  • Stearic Acid
  • Silica
  • Magnesium Stearate
  • Croscarmellose Sodium
  • Pharmaceutical Glaze
Efficacy Excellent

Dosage Analysis

  • Vitamin C (as Ascorbic Acid, Niacinamide Ascorbate) 500 mg Effective
  • Vitamin E (as DL-Alpha-Tocopheryl Acetate) 30 IU Effective
  • Thiamine (as Thiamine Mononitrate) 10 mg Effective
  • Riboflavin 10 mg Effective
  • Niacin (as Niacinamide, Niacinamide Ascorbate) 100 mg High
  • Vitamin B6 (as Pyridoxine Hydrochloride) 5 mg Effective
  • Folate (as Folic Acid) 400 mcg Effective
  • Vitamin B12 (as Cyanocobalamin) 12 mcg Effective
  • Biotin 45 mcg Effective
  • Pantothenic Acid (as D-Calcium Pantothenate) 20 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Ascorbic Acid, Niacinamide Ascorbate) 500 mg 833%
Vitamin E (as DL-Alpha-Tocopheryl Acetate) 30 IU 100%
Thiamine (as Thiamine Mononitrate) 10 mg 667%
Riboflavin 10 mg 588%
Niacin (as Niacinamide, Niacinamide Ascorbate) 100 mg 500%
Vitamin B6 (as Pyridoxine Hydrochloride) 5 mg 250%
Folate (as Folic Acid) 400 mcg 100%
Vitamin B12 (as Cyanocobalamin) 12 mcg 200%
Biotin 45 mcg 15%
Pantothenic Acid (as D-Calcium Pantothenate) 20 mg 200%

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.

Microcrystalline Cellulose Safe

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

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Pharmaceutical Glaze Generally_safe

It is used to coat tablets or capsules for easier swallowing or controlled release.

Brand Trust Report
Windmill

Founded 1972 · West Caldwell, New Jersey, United States · 302 products · windmillvitamins.com/

Certifications

2 certifications
Fda Gmp Inspections Verified Source
NSF Certified Verified

Transparency

4 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source
Testing Lab Disclosure — True

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
Related Supplements
Frequently Asked Questions
Is Windmill Stress Formula a good supplement?

Windmill Stress Formula received a product quality score of 91/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 10 active ingredients Of the 7 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Windmill, holds a brand trust score of 83/100 with 2 verified certifications including Fda Gmp Inspections, NSF Certified.

What are the ingredients in Windmill Stress Formula?

Windmill Stress Formula contains 10 active ingredients: Vitamin C (as Ascorbic Acid, Niacinamide Ascorbate) (500 mg), Vitamin E (as DL-Alpha-Tocopheryl Acetate) (30 IU), Thiamine (as Thiamine Mononitrate) (10 mg), Riboflavin (10 mg), Niacin (as Niacinamide, Niacinamide Ascorbate) (100 mg), Vitamin B6 (as Pyridoxine Hydrochloride) (5 mg), and 4 more. Notable high-dose ingredients include Vitamin C at 833% DV, Thiamine at 667% DV, Riboflavin at 588% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Windmill Stress Formula safe to take?

Windmill Stress Formula 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 83/100 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 302 products in their lineup. They hold 2 verified certifications including Fda Gmp Inspections, NSF Certified. 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 — read our methodology. 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.