Vitamin D 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

• 

  Dry D Non-oily-dry Tablets

  Wonder Laboratories5.0(1)

  $2.98
• 

  Wonder Laboratories Cal-Plex-D Calcium Magnesium Tablets

  Wonder Laboratories5.0(1)

  $5.19
• 

  Baby Ddrops Liquid Vitamin D3 400 IU Drops

  Instacart4.8(4800)

  $12.99
• 

  Spring Valley Vitamin D3 Softgels

  Walmart4.6(5400)

  $4.88
• 

  Major 400IU Tablets

  CWI Medical4.0(3)

  $1.95
• 

  Vitamin D3 IU

  My Nature's Delight

  $10.99
• 

  DC Labs Vitamin D 400 IU

  EarthTurns.com

  $6.38
• 

  D-3 Tablets | 400 IU | 100/Bottle | Each | OTC087401

  HealthProductsForYou.com

  $4.52

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.

• ITL Health

  5.0 (37)

  Vitamin & Supplements Shop

  50 Broadway, London SW1H 0BL

  Directions0118 321 7628

• Holland & Barrett - Strand

  3.7 (51)

  Vitamin & Supplements Shop

  406-408 Strand, London WC2R 0NE

  Directions0330 058 2640

• Chelsea Health Store

  4.5 (28)

  Health food shop

  400 King's Rd, London SW10 0LJ

  Directions020 7352 4663

• Holland & Barrett - Oxford Street

  3.8 (192)

  Vitamin & Supplements Shop

  146, 148 Oxford St, London W1D 1NA

  Directions0330 058 2640

• HARA Health Store

  4.7 (50)

  Vitamin & Supplements Shop

  231 Finchley Rd, South Hampstead, London NW3 6LS

  Directions020 7794 5486

• Holland & Barrett - Covent Garden

  3.7 (60)

  Vitamin & Supplements Shop

  39 Long Acre, London WC2E 9LG

  Directions0330 058 2640

• Holland & Barrett - Maddox Street

  4.3 (52)

  Vitamin & Supplements Shop

  6-8 Maddox St, London W1S 1NR

  Directions0330 058 2640

• HealthAid

  4.1 (35)

  Vitamin & Supplements Shop

  HealthAid House, Marlborough Hill, Harrow HA1 1UX

  Directions020 8426 3400

• Vitamin D testing and treatment: a narrative review of current evidence

  S Pilz, A Zittermann, C Trummer… - Endocrine …, 2019 - pmc.ncbi.nlm.nih.gov

  … supplementation of 10 µg (400 IU) of vitamin D daily from birth to 12 months, and thereafter, vitamin D intakes through diet and … fail and is not a ‘wonder drug’ (160). Unfortunately, many …

  2019390 citations

• A review on vitamin d deficiency treatment in pediatric patients

  JY Lee, TY So, J Thackray - The Journal of Pediatric …, 2013 - jppt.kglmeridian.com

  … intake of 400 international units of vitamin D to prevent rickets and to maintain vitamin D … One may wonder is the decrease in serum vitamin D concentrations in children with asthma …

  2013221 citations

• Dietary reference intakes for calcium and vitamin D

  HB Del Valle, AL Yaktine, CL Taylor, AC Ross - 2011 - books.google.com

  … , and some readers of this report may also wonder, “What is that?” The process is … 400 International Units (IU) (10 µg) per day was adequate to maintain this level. The ULs for vitamin D …

  20115,086 citations

• Efficacy of daily 4,000 International Units (IU) versus 6,000 IU of oral vitamin D3 in vitamin D deficient children with overweight and obesity: An open-label randomized …

  P Setia, A Seth, R Singh, RK Malhotra, P Singh - Clinical Nutrition ESPEN, 2025 - Elsevier

  … Children with overweight/obesity are at increased risk of vitamin D deficiency. This study … International Units (IU)/day vs. 6000 IU/day oral vitamin D 3 over 12 weeks for treating vitamin D …

  20251 citations

• Interaction between vitamin D and calcium

  P Lips - Scandinavian journal of clinical and laboratory …, 2012 - Taylor & Francis

  … residents who received either vitamin D3 800 IU/day and … 2,578 elderly persons who received vitamin D3 400 IU/day or … I wonder if you could speculate on the way that calcium was …

  2012154 citations

• Power of Vitamin D: A Vitamin D Book That Contains the Most Scientific, Useful And Practical Information About Vitamin D-Hormone D

  S Zaidi - 2013 - books.google.com

  … I started to give my vitamin D deficient patients a dose of vitamin D higher than the … get vitamin D from the sun: Vitamin D is the “sunshine” vitamin. But are we getting enough vitamin D …

  201315 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 2021-12-18. DSLD Label ID: 262236. 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.