D is for D3
Brand: Chapter One by Zahler
Children 4 or More Years of AgePeanut free
Tree nut free
Dairy free
Gluten free
Soy free
Egg freeVitamin
Quality score
85/100
DSLD
313735
UPC
848998041212
Form
Gummy or Jelly
Serving size
1 Gummy(ies)
≈ 120 servings
Net contents
120 Gummy(ies)
Standard Pack
Top DV
Total Carbohydrates1%
Per serving
Directions
Directions: Take one gummy daily or as directed by a healthcare practitioner.
NIH DSLD-backedSource links included
Updated: 2026-01-16
Dr. Feb's Analysis
Scientific Mechanism
At the cellular level, Vitamin D3 (cholecalciferol) acts as a pro-hormone. It binds to the Vitamin D Receptor (VDR) in the nucleus of cells, regulating gene expression. This process modulates calcium absorption in the intestines and supports the innate immune system. The 25 mcg dosage provides 125% DV, ensuring sufficient levels to maintain cellular homeostasis and bone mineralization.
Key Benefits
Key benefits include:
- Supports a robust immune system response
- Promotes calcium absorption for strong bones and teeth
- Aids in normal muscle function
- Helps maintain optimal Vitamin D levels year-round
Usage & Safety
Take 1 gummy daily, preferably with a meal containing healthy fats to maximize absorption of this fat-soluble vitamin. Do not exceed the recommended dosage. Consult a healthcare provider if you are pregnant, nursing, or taking medications, as Vitamin D can interact with certain drugs like thiazides or steroids.
Daily value highlights
Total Carbohydrates1%
Added Sugars2%
Vitamin D3125%
Receipts
Frequently Asked Questions
What are the key benefits of D is for D3?▼
This supplement provides 25 mcg of Vitamin D3 per gummy, supporting immune function, bone density, and calcium absorption.
How should I take this supplement?▼
Take 1 gummy daily. It is best absorbed when taken with a meal containing fat.
Are there known allergens?▼
The label lists 'Allergens: D is for D3 with Vitamin D3 the sunshine vitamin.' Please review the full ingredient list for specific dietary needs.
Is Chapter One by Zahler a reputable brand?▼
Yes, Chapter One by Zahler is a recognized brand, and their products are often listed in the NIH Dietary Supplement Label Database (DSLD).
D is for D3
Quality 85/100 • DSLD 313735