Vitamin D3 1000 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) · 1–2 per day

Not Present

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  Sundown Naturals Softgels

  eBay - goodsams100920124.7(605)

  $12.97
• 

  Sundown Naturals 400IU Softgels

  Xpress Lane Pharmacy

  $6.59
• 

  Sundown Naturals D3

  Instacart4.8(63)

  $10.19
• 

  Sundown Naturals D3 Vitamin Softgels

  Name Brand Overstock4.7(605)

  $17.49
• 

  Lot Of 2-sundown, Vitamin D3 1000iu 25mcg 400 Softgels Bone Teeth

  eBay4.7(605)

  $34.99
• 

  Vitamin D3, 1,000 IU Tablets

  Amazon.com

  $19.00
• 

  Lot Of 2-sundown, Vitamin D3 1000iu 25mcg 350 Softgels Bone Teeth

  eBay - treasuredthingsllc4.7(605)

  $29.99
• 

  Sundown Naturals Gummies

  Instacart

  $8.19

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• Supplement Superstore

  4.8 (132)

  Vitamin & supplements store

  8600 Ward Pkwy Ste 2140, Kansas City, MO 64114

  Directions(816) 326-7155

• The Vitamin Shoppe

  4.5 (97)

  Vitamin & supplements store

  9 W 62 Terrace, Kansas City, MO 64113

  Directions(816) 363-1223

• Walmart Supercenter

  3.8 (5557)

  Department store

  1701 W 133rd St, Kansas City, MO 64145

  Directions(816) 942-3847

• Whole Foods Market

  4.4 (1981)

  Grocery store

  301 E 51st St, Kansas City, MO 64112

  Directions(816) 708-3700

• CVS

  2.8 (145)

  Vitamin & supplements store

  11124 Holmes Rd, Kansas City, MO 64131

  Directions(816) 942-3262

• Whole Foods Market

  4.3 (1601)

  Grocery store

  11900 Metcalf Ave, Overland Park, KS 66213

  Directions(913) 663-2951

• Walmart Supercenter

  3.8 (7356)

  Department store

  11701 Metcalf Ave, Overland Park, KS 66210

  Directions(913) 338-2202

• CVS

  2.6 (94)

  Vitamin & supplements store

  13101 State Line Rd, Kansas City, MO 64145

  Directions(816) 942-2438

• Estimated equivalency of vitamin D production from natural sun exposure versus oral vitamin D supplementation across seasons at two US latitudes

  V Terushkin, A Bender, EL Psaty, O Engelsen… - Journal of the American …, 2010 - Elsevier

  … of the equivalency of vitamin D production from natural sun exposure … sun exposure times needed to achieve serum vitamin D 3 concentrations equivalent to 400 or 1000 IU vitamin D for …

  2010215 citations

• Vitamin D—is the sun enough for us?

  BM Gruber-Bzura - Nutrition & Metabolism, 2025 - Springer

  … the conversion of previtamin D3 and vitamin D3, resulting from sun irradiated skin 7… sun exposure (face, neck, hands, arms) to synthesize vitamin D 3 at a dose equal to 400 IU or 1000 IU…

  20254 citations

• Single high-dose vitamin D3: a promising sunburn therapy

  JA McGrath, KQ Lu - British Journal of Dermatology, 2025 - academic.oup.com

  … of 100 000–200 000 IU vitamin D3 (1000 IU = 25 μg) within … vitamin D3 before sun exposure offer the same benefits? The answer remains unclear, although it is likely that vitamin D3…

  20255 citations

• Vitamin D: the sunshine vitamin

  ZP Rona - 2011 - books.google.com

  … body produces as the result of sun exposure; it is also … vitamin D2 were the same as those of vitamin D3. According to Holick, “1,000 IU of vitamin D2 daily was as effective as 1,000 IU of …

  201110 citations

• Vitamin D: The “sunshine” vitamin

  R Nair, A Maseeh - Journal of pharmacology and …, 2012 - journals.sagepub.com

  … [7] In this review, we will focus on the biology of vitamin D and … the sun strikes the skin, and humans synthesize vitamin D3, … be 1000 IU/d for infants up to 6 months, 1500 IU/d for infants …

  20121,507 citations

• Overview on vitamin D and sunbed use

  L Pierret, M Suppa, S Gandini… - Journal of the …, 2019 - Wiley Online Library

  … is equivalent to 1000 International Units (IU) oral vitamin D3.Based on … sun exposure time needed to achieve serum vitamin D3 concentrations equivalent to 400 or 1000 IU vitamin D for …

  201916 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 2018-03-23. DSLD Label ID: 175024. 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.