Natural Vitamin D3 400 IU®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1 Softgel(s) · 1 per day

Not Present

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  Country Life Vitamin D3

  Country Life Vitamins4.8(808)

  $27.97
• 

  Country Life D3 Gummies 60 Count

  Country Life Vitamins3.7(3)

  $24.99
• 

  Country Life Vegan D3 + K2 60 Vegan Capsules

  Walmart - iHerb4.9(43)

  $19.25
• 

  Country Life Vegan D3 Gummies

  Country Life Vitamins4.7(31)

  $18.99
• 

  COUNTRY LIFE Calcium-Magnesium with Vitamin D Complex

  The Vitamin Shoppe4.7(623)

  $30.99
• 

  Country Life Vegan D3 Softgels

  Natures Food Markets4.8(122)

  $18.29
• 

  Country Life Quercetin + D3

  Country Life Vitamins4.8(59)

  $29.49
• 

  Vitamin D3, 400 IU TABLET

  Amazon.com

  $5.40

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• The Vitamin Shoppe

  4.4 (142)

  Vitamin & supplements store

  300 N Frederick Ave, Gaithersburg, MD 20877

  Directions(301) 527-1282

• The Vitamin Shoppe

  4.6 (154)

  Vitamin & supplements store

  1803 Rockville Pike, Rockville, MD 20852

  Directions(301) 231-7900

• NATUREAL Supplements

  5.0 (2)

  Vitamin & supplements store

  22505 Gateway Center Dr, Clarksburg, MD 20871

  Directions(855) 526-5846

• Nutraforia LLC

  Vitamin & supplements store

  11810 Grand Park Ave, North Bethesda, MD 20852

  Directions(833) 774-3425

• GNC

  2.5 (22)

  Vitamin & supplements store

  12266 Rockville Pike Spc #11, Rockville, MD 20852

  Directions(240) 242-6003

• Fitnutrition - Herbalife

  5.0 (5)

  Health food store

  424 N Frederick Ave Ste 6, Gaithersburg, MD 20877

  Directions(240) 605-2935

• e-NutritionStore.com

  5.0 (10)

  Vitamin & supplements store

  6010 Meadowridge Center Dr K, Elkridge, MD 21075

  Directions(443) 483-3340

• The Vitamin Shoppe

  4.4 (72)

  Vitamin & supplements store

  10 University Blvd W, Silver Spring, MD 20901

  Directions(301) 593-0595

• Comparative analysis of nutritional guidelines for vitamin D

  R Bouillon - Nature Reviews Endocrinology, 2017 - nature.com

  … of rickets, has demonstrated that vitamin D (at a dose of 400 IU per day) can protect against … that >200–400 IU of vitamin D 3 or vitamin D 2 can prevent vitamin D deficiency-associated …

  2017628 citations

• Worldwide status of vitamin D nutrition

  P Lips - The Journal of steroid biochemistry and molecular …, 2010 - Elsevier

  … source of vitamin D in the US as it is fortified with 400 IU per quart. A poor vitamin D status was … study showed that a serum 25(OH)D below 50 nmol/l was present in 26% of older men. …

  2010737 citations

• Sources of vitamin D for humans

  E Benedik - International Journal for Vitamin and Nutrition …, 2021 - econtent.hogrefe.com

  … intake for vitamin D for infants aged 7–11 months at 10 μg/day (400 IU/day), and for children aged 1–17 years and adults, including pregnant and lactating women, at 15 μg/day (600 IU/…

  2021298 citations

• Sunlight and Vitamin D: A global perspective for health

  M Wacker, MF Holick - Dermato-endocrinology, 2013 - Taylor & Francis

  … Vitamin D is the sunshine vitamin that has been produced on this earth for more than 500 … to previtamin D3 which in turn isomerizes into vitamin D3. Previtamin D3 and vitamin D3 also …

  20132,022 citations

• Trends in vitamin D status around the world

  P Lips, RT de Jongh… - Journal of Bone and …, 2021 - academic.oup.com

  … vitamin D status. In this article we give an overview of changing trends in vitamin D status in different regions and countries … Vitamin D3 400 IU/d was given for free to all neonates. The …

  2021135 citations

• Vitamin D requirements for humans of all ages: new increased requirements for women and men 50 years and older

  MF Holick - Osteoporosis international, 1998 - search.proquest.com

  … Furthermore, a comparison of bone loss in women ingesting 200 IU (2.5 μg) or 400 IU (10 μg) of vitamin D/day demonstrated that those women on 400 IU (10 μg)/day had less bone loss …

  1998163 citations

• Vitamin D: What the Label Numbers Mean

  How to read vitamin D amounts on a Supplement Facts panel, the IU-to-mcg conversion, and why %DV matters.

  VitaSuppTrack Editorial· Jun 24, 2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2015-06-25. DSLD Label ID: 46630. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.