D3 400 IU (10 mcg)®

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

• 

  Mason Natural Vitamin IU Softgels

  Target4.7(69)

  $9.75
• 

  Mason Natural D3 Softgels

  Walmart - Nutrients Best, a Mason Natural Certified Vendor4.8(20)

  $14.57
• 

  Mason Vitamin D3 10 mcg (400 IU)

  Instacart4.7(69)

  $3.79
• 

  Mason Natural Vitamin D3 10 mcg (400 IU) 100 Softgels

  GoSupps.com4.7(69)

  $29.99
• 

  Mason Natural D 400IU Vanilla Chewables

  Pasteur Pharmacy4.0(2)

  $4.49
• 

  Mason Natural 250 Mcg Softgels

  CVS Pharmacy4.8(50)

  $4.99
• 

  (3 pack) Mason Natural Vitamin D3 - Strengthens Bones and Muscles, 60 Softgels

  Walmart - Nutrients Best, a Mason Natural Certified Vendor4.8(61)

  $23.69
• 

  Mason Natural Calcium 500 with Vitamin D3

  Mason Natural4.6(59)

  $7.99

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

  4.6 (154)

  Vitamin & supplements store

  1803 Rockville Pike, Rockville, MD 20852

  Directions(301) 231-7900

• GNC

  2.9 (30)

  Vitamin & supplements store

  13733 Connecticut Ave, Wheaton-Glenmont, MD 20906

  Directions(240) 283-6811

• The Vitamin Shoppe

  4.4 (142)

  Vitamin & supplements store

  300 N Frederick Ave, Gaithersburg, MD 20877

  Directions(301) 527-1282

• The Vitamin Shoppe

  4.4 (72)

  Vitamin & supplements store

  10 University Blvd W, Silver Spring, MD 20901

  Directions(301) 593-0595

• The Vitamin Shoppe

  4.4 (104)

  Vitamin & supplements store

  2460 Market St NE #701, Washington, DC 20018

  Directions(202) 269-0809

• The Vitamin Shoppe

  4.2 (86)

  Vitamin & supplements store

  6250 Columbia Crossing Cir Ste L, Columbia, MD 21045

  Directions(410) 872-0440

• Vitamin D—function and uses

  D Vitamin, P Mason - Pharmaceutical Journal (Vol 277), 2006 - easy-immune-health.com

  … micrograms? It should be noted that 1 … dose of 1,000mg daily with vitamin D 400 IU did not significantly reduce hip … The Department of Health recommends a paediatric supplement …

  2006

• Vitamin D: The Challenge of Bridging the Gap and the Rationale for Supplementation

  P Mason, N Aslam, G Jenkins - Food Nutr. J, 2023 - hsis.org

  … of the vitamin D gap and its impacts on health and disease. … sunshine and supplements, explaining why supplements are … bone health range for adults under 70 years vary from 10 mcg (…

  20232 citations

• Clinical Implications and Preventive Strategies for Neonatal and Infant Hypovitaminosis D: Analysis and Comparison of Current Evidence

  V Ferrari, G Biasucci, E Candela, R Ortolano, F Baronio… - Endocrines, 2025 - mdpi.com

  … levels above 40 ng/mL for better health outcomes [9,10]. … intake of 1000 to 1600 IU (25 to 40 mcg/day). Similarly, other … administering 400 IU/day of vitamin D to infants born to vitamin D-…

  20252 citations

• The pleiomorphic actions of vitamin D and its importance for children

  SY Kim - Annals of pediatric endocrinology & metabolism, 2013 - synapse.koreamed.org

  … understanding of vitamin D for child and adolescent health. … daily 10 microgram vitamin D supplement for those at risk of … should be supplemented with 400 IU/d of vitamin D. In United …

  201356 citations

• The Role of Vitamin D in Hormonal Balance

  P Bose - nooria-swiss.com

  … their vitamin D3 levels and consult with Complete Healthcare for … The NHS says a daily 10 mcg/μg (400 IU) vitamin D supplement … not taking more than 100 mcg/μg (4,000 IU) per day. …

• Evaluating the Impact of Vitamin D Supplementation on Serum Leptin Levels: A Meta-Analysis of Randomized Controlled Trials

  B Nikooyeh, ME Motlagh, T Neyestani - Nutrition and food in health …, 2024 - nfsr.sbmu.ac.ir

  … (supplement/fortification) or frequency at which vitamin D is taken. … Vitamin D3 (cholecalciferol) 400 IU/ml (10 mcg/ml) plus thin … of daily vitamin D ranged from 400 IU (13) to 4000 IU (18). …

  2024

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-08-22. DSLD Label ID: 336413. 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.