Chapter One D3 & K2, Mixed Berries, 60 Gummies supplement bottle
Chapter One

D3 & K2, Mixed Berries, 60 Gummies

What We Researched
7 active ingredients analyzed · 9 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
83
Product Score Good
63
Brand Score Fair

Product Analysis

Transparency Very Good

Supplement Facts

IngredientAmount% DV
Vitamin D3 (Cholecalciferol) 25 mcg 125%
Menaquinone- (Vitamin K2) 45 mcg **
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (Cholecalciferol) Good
  • Menaquinone- (Vitamin K2) Good
Other Ingredients Excellent

Fillers & Additives

  • Glucose Syrup
  • Sugar
  • Water
  • Pectin
  • Natural Flavor
  • Natural Color
  • Citric Acid
  • Sodium Citrate
  • Carnauba Wax
Efficacy Fair

Dosage Analysis

  • Vitamin D3 (Cholecalciferol) 25 mcg Effective
  • Menaquinone- (Vitamin K2) 45 mcg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Carbohydrate 2 g 1%
Total Sugars 2 g **
Includes 2 g Added Sugars 4%`
Vitamin D3 (Cholecalciferol) 25 mcg 125%
Sodium 5 mg <1%
Menaquinone- (Vitamin K2) 45 mcg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Glucose Syrup Generally_safe

It is used as a sweetener and binder.

Sugar Generally_safe

Adds sweetness to chewable or gummy supplements.

Water Safe

Dissolves and carries water-soluble ingredients.

Pectin Safe

Forms the base of gummy supplements as a vegan gelatin alternative.

Natural Flavor Safe

Improves taste of chewable, gummy, or liquid supplements.

Natural Color Generally_safe

It is used to add color to supplements.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Sodium Citrate Safe

Stabilizes pH and helps maintain ingredient effectiveness.

Carnauba Wax Safe

Provides a glossy, protective coating on tablets.

Price Comparison

Vitacost $16.29 $0.27 / serving
Best Price
iHerb $19.47 $0.32 / serving

Price History

Tracked across major retailers. Updated periodically.

$21$20$18$16$14 Mar 12 $19.47$16.29
iHerb
Vitacost

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

Brand Trust Report
Chapter One

Founded 2019 · Brooklyn, NY, USA · 17 products · zahler.com/collections/g-is-for-gummies

Certifications

1 certification
Vegan Certified Verified Source

Transparency

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

Violation History

3 incidents
Prop 65 Lead and lead compounds2023-08-28Source
Prop 65 Lead2021-12-09Source
Fda Warning A third-party retailer was cited for making disease-prevention claims about a Zahler product, which is a violation of the Federal Food, Drug, and Cosmetic Act.2017-04-17Source
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Frequently Asked Questions
Is Chapter One D3 & K2, Mixed Berries a good supplement?

Chapter One D3 & K2, Mixed Berries, 60 Gummies received a product quality score of 83/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 7 active ingredients with 60 servings per container. Of the 9 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Chapter One, holds a brand trust score of 63/100 with 1 verified certifications including Vegan Certified.

What are the ingredients in Chapter One D3 & K2, Mixed Berries?

Chapter One D3 & K2, Mixed Berries contains 7 active ingredients: Calories (10), Total Carbohydrate (2 g), Total Sugars (2 g), Includes 2 g Added Sugars, Vitamin D3 (Cholecalciferol) (25 mcg), Sodium (5 mg), and 1 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Chapter One D3 & K2, Mixed Berries safe to take?

Chapter One D3 & K2, Mixed Berries, 60 Gummies 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 Chapter One a trustworthy supplement brand?

Chapter One receives a brand trust score of 63/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2019 and headquartered in Brooklyn, NY, USA, the company offers 17 products in their lineup. They hold 1 verified certifications including Vegan Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Chapter One has 3 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.