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D3 Supplement 1000 IU

Spring Valley
4.8
★ ★ ★ ★ ★
(3709 ratings)
Vitamin D 1000 IU
Product Image
Score85
A low-cost 1,000 IU D3 softgel covers basic maintenance well. Confirm the serving total because the supplied ingredient data repeat the active.
How scoring works
Quantity:100 Softgel(s) • (100 servings)
Goals:
General Health
Anti-Inflammatory Support
Immunity
Anti-Aging
Testosterone Support

Score 85

A low-cost 1,000 IU D3 softgel covers basic maintenance well. Confirm the serving total because the supplied ingredient data repeat the active.
How scoring works

Also available as

1 option
400.00IU • 200 servings D 400 IU • 200 Softgel(s) • 200 servings $4.88 ($0.02 per serving)
$3.94($0.03 per serving)
Walmart
$ 3.94
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Analysis

The softgel contains cholecalciferol at 1,000 IU, a moderate amount suited to maintenance for many adults. Lipid-friendly delivery is appropriate for vitamin D absorption.

Its simple design makes it easy to combine with a broader nutrition plan without introducing unrelated actives. The supplied list repeats vitamin D3 in two equivalent entries, so the package should confirm that the serving total is not doubled.

Low cost and a substantial supply make it attractive for routine use. Raw-source information, full inactive ingredients, and independent quality verification are not provided.

Who is it for
  • Adults seeking a modest D3 amount
  • People who want a simple softgel
  • Budget-focused maintenance users
Best for
  • Everyday vitamin D maintenance
  • Simple single-active routines
  • Affordable long-term use

Pros

  • Uses vitamin D3
  • Provides a moderate 1,000 IU amount
  • Softgel delivery supports absorption
  • Offers strong value

Cons

  • Vitamin D is duplicated in the supplied ingredient list
  • Raw source is not disclosed
  • Full inactive ingredients are unavailable
  • Independent verification is not listed

Warnings

  • Check the original label to confirm that the duplicate entries represent one 1,000 IU serving.
  • Count vitamin D from multivitamins and fortified foods toward total daily intake.
  • Users with high blood calcium, kidney stones, or thiazide or digoxin therapy should obtain individualized guidance.

Nutrient quality

92 Highest impact

Cholecalciferol is a well-regarded and absorbable vitamin D form in a lipid-friendly softgel. The vitamin D amount fits common maintenance use.

.

Ingredient transparency

77 High impact

Duplicate vitamin D entries make the total amount presentation confusing. A complete excipient and carrier list is not available in the supplied data.

.

Customer satisfaction

76 High impact

The average rating is very strong. The large rating volume provides a reliable satisfaction signal.

.

Value for money

97 Highest impact

The supply provides excellent value per effective serving. The formula is not inflated by low-value extras.

.
Report analysis

Goals

General Health
General Health
Impact
Highest effect
A Goal FitA- Strength of SupportC+ CoverageA Formula Quality
Vitamin D · 1000 IU

Vitamin D3 is a well-supported foundational nutrient for immune and skeletal maintenance. The 1,000 IU softgel provides a practical routine amount.

The focused formula does not address other common nutrient gaps. Source details and independent verification are not provided, but the active form and amount are clearly identified.

Study evidence
Vitamin D Supportive 115 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
Highest effect
A- Goal FitB+ Strength of SupportC CoverageA- Formula Quality
Vitamin D · 1000 IU

Vitamin D3 at 1,000 IU provides practical maintenance support for immune regulation and balanced cytokine signaling. The benefit is most relevant when vitamin D status is low or intake is inadequate.

The softgel and cholecalciferol form are suitable for absorption. Duplicate vitamin D entries and the lack of a disclosed raw source reduce label clarity.

Study evidence
Vitamin D Supportive 101 studies
Immunity
Immunity
Impact
Highest effect
A- Goal FitB+ Strength of SupportC- CoverageA Formula Quality
Vitamin D · 1000 IU

Vitamin D3 provides direct support for immune-cell signaling at a standard maintenance amount. Softgel delivery may aid absorption of this fat-soluble vitamin.

The formula is focused and suitable for routine foundational support rather than broad seasonal coverage. Duplicate D3 source entries make the label slightly less clear but do not indicate added pathway breadth.

Study evidence
Vitamin D Supportive 85 studies
Anti-Aging
Anti-Aging
Impact
High effect
B- Goal FitB+ Strength of SupportC- CoverageB+ Formula Quality
Vitamin D · 1000 IU

Vitamin D3 supports skeletal, muscle, and immune health across the lifespan at a practical maintenance amount. Softgel delivery is appropriate for this fat-soluble vitamin.

The formula is foundational rather than a targeted longevity intervention and covers only one major pathway. The duplicated ingredient wording appears to describe the same vitamin D3 amount rather than two separate actives.

Study evidence
Vitamin D Supportive 50 studies
Testosterone Support
Testosterone Support
Impact
High effect
B+ Goal FitC+ Strength of SupportD CoverageA Formula Quality
Vitamin D · 1000 IU

Vitamin D3 supports a foundational endocrine pathway, but the 1000 IU serving is below the preferred goal-specific amount. It may still suit routine maintenance or help people with modestly low intake.

The softgel format can support absorption, though the source and carrier oil are not stated in the supplied data. No complementary zinc, magnesium, adaptogen, or boron is included, leaving the approach narrow.

Study evidence
Vitamin D Supportive 56 studies
Energy
Energy
Impact
Moderate effect
D+ Goal FitB Strength of SupportD- CoverageB+ Formula Quality
Vitamin D · 1000 IU

Vitamin D3 may help fatigue when low vitamin D status is the underlying issue, but it is not a direct ATP or alertness ingredient. The maintenance amount and softgel format are suitable for routine vitamin D support.

No B-vitamin, magnesium, mitochondrial active, stimulant, or adaptogen broadens the energy relevance. Duplicate vitamin D entries also create minor label redundancy.

Study evidence
Vitamin D Supportive 32 studies

Ingredients

IngredientAmount per serving
Vitamin D (Cholecalciferol, Vitamin D3)
 1000 IU
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Vitamin D (Cholecalciferol, Vitamin D3) · 1000 IU OverallScore78
A Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value

Vitamin D3 uses the preferred form and the softgel may support absorption, though its raw source is undisclosed. The 1000 IU serving suits standard maintenance. No flagged additives are disclosed, but independent verification is absent and cost efficiency is favorable.

View ingredientView products
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87 Performance

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<p>A focused formula supplies 1000 IU of cholecalciferol without unrelated active ingredients. Compared with the original, the simple, clearly quantified vitamin D3 profile is easier to assess and closely matches the original’s listed vitamin D amount.</p>
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Vitamin D-3 1000 IU

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<p>A focused formula supplies 1000 IU of lanolin-derived vitamin D3 without unrelated active ingredients. Compared with the original, the simple, clearly quantified vitamin D3 profile is easier to assess and closely matches the original’s listed vitamin D amount.</p>
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Liquid Vitamin D3 Drops 2000 IU Natural Citrus Flavor

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<p>A liquid formula supplies 2000 IU of lanolin-derived vitamin D3 without unrelated active ingredients. Compared with the original, the simple, clearly quantified vitamin D3 profile is easier to assess and uses a higher vitamin D amount, so suitability depends more heavily on measured status and professional guidance.</p>
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Liquid Vitamin D3 Drops 1000 IU Natural Citrus Flavor

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<p>A liquid formula supplies 1000 IU of lanolin-derived vitamin D3 without unrelated active ingredients. It costs less per serving than the original and closely matches the original’s listed vitamin D amount.</p>
88 Budget

Extra Strength Liquid Vitamin D3

Protocol For Life Balance
<p>A liquid formula supplies 2000 IU of lanolin-derived vitamin D3 without unrelated active ingredients. It costs less per serving than the original and uses a higher vitamin D amount, so suitability depends more heavily on measured status and professional guidance.</p>
82 Budget

D3 Supplement 400 IU

Spring Valley
<p>A focused formula supplies 400 IU of cholecalciferol, a modest amount that may fit low-dose needs but may be insufficient for many adults. It costs less per serving than the original and uses a lower vitamin D amount that may suit routine maintenance better, but may not match a documented high-dose need.</p>
85 Value

D3 1000 IU

Nature Made
<p>A focused formula supplies 1000 IU of cholecalciferol without unrelated active ingredients. Its focused formula and dose alignment support practical value, although it does not undercut the original’s serving cost and closely matches the original’s listed vitamin D amount.</p>
86 Value

Vitamin D-3 2000 IU

Source Naturals Wellness
<p>A focused formula supplies 2000 IU of cholecalciferol without unrelated active ingredients. Its focused formula and dose alignment support practical value, although it does not undercut the original’s serving cost and uses a higher vitamin D amount, so suitability depends more heavily on measured status and professional guidance.</p>
85 Value

Vitamin D-3 2000 IU

Source Naturals
<p>A focused formula supplies 2000 IU of cholecalciferol without unrelated active ingredients. Its focused formula and dose alignment support practical value, although it does not undercut the original’s serving cost and uses a higher vitamin D amount, so suitability depends more heavily on measured status and professional guidance.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Joint association of serum 25-hydroxyvitamin D concentration and body mass index on the acceleration of clinical biomarker-based biological aging.
    Pan Z; Zeng J; Chen Z; Chen S; Yang J; Li H; Wang S; Wang J; Li N; Gong Y; Liu M; Li C · The journals of gerontology. Series A, Biological sciences and medical sciences · 2026
    Cohort study389,217 participantsAnti-Aging forVitamin D
  2. Serum 25-Hydroxyvitamin D Levels as an Aging Marker: Strong Associations With Age and All-Cause Mortality Independent From Telomere Length, Epigenetic Age Acceleration, and 8-Isoprostane Levels.
    Schöttker B; Hagen L; Zhang Y; Gào X; Holleczek B; Gao X; Brenner H · The journals of gerontology. Series A, Biological sciences and medical sciences · 2019
    Cohort study9,940 participantsAnti-Aging forVitamin D
  3. Sex-specific associations of serum 25-hydroxyvitamin D concentrations with incident sarcopenia in older adults: A 2-year follow-up study.
    Song S; Lim JY; Kim M; Won CW; Park HY · The journal of nutrition, health & aging · 2025
    Cohort study1,292 participantsAnti-Aging forVitamin D
  4. Vitamin D deficit is associated with accelerated brain aging in the general population.
    Terock J; Bonk S; Frenzel S; Wittfeld K; Garvert L; Hosten N; Nauck M; Völzke H; Van der Auwera S; Grabe HJ · Psychiatry research. Neuroimaging · 2022
    Cross-sectional study1,865 participantsAnti-Aging forVitamin D
  5. Vitamin D intake is associated with dementia risk in the Washington Heights-Inwood Columbia Aging Project (WHICAP).
    Zhao C; Tsapanou A; Manly J; Schupf N; Brickman AM; Gu Y · Alzheimer's & dementia : the journal of the Alzheimer's Association · 2021
    Cohort study1,759 participantsAnti-Aging forVitamin D
  6. Vitamin D deficiency and C-reactive protein: a bidirectional Mendelian randomization study.
    Zhou A; Hyppönen E · International journal of epidemiology · 2023
    Observational study294,970 participantsAnti-Inflammatory Support forVitamin D
  7. Vitamin D in Children With Inflammatory Bowel Disease: A Randomized Controlled Clinical Trial.
    El Amrousy D; El Ashry H; Hodeib H; Hassan S · Journal of clinical gastroenterology · 2021
    Randomized trial120 participantsAnti-Inflammatory Support forVitamin D
  8. Vitamin D supplementation reduces infection rate and promotes wound healing in patients with diabetic foot ulcers.
    Gao YQ; Gao YH; Xing JH · World journal of diabetes · 2025
    Randomized trial120 participantsAnti-Inflammatory Support forVitamin D
  9. Associations of C-reactive Protein with 25-hydroxyvitamin D in 24 Specific Diseases: A Cross-sectional Study from NHANES.
    Yang F; Sun M; Sun C; Li J; Yang X; Bi C; Wang M; Pu L; Wang J; Wang C; Xie M; Yao Y; Jin L · Scientific reports · 2020
    Cross-sectional study9,809 participantsAnti-Inflammatory Support forVitamin D
  10. Combined effects of vitamin D deficiency and systemic inflammation on all-cause mortality and cause-specific mortality in older adults.
    Zhang C; Cui J; Li S; Shen J; Luo X; Yao Y; Shi H · BMC geriatrics · 2024
    Cohort study3,072 participantsAnti-Inflammatory Support forVitamin D
  11. Effect of Vitamin D Supplementation on Fatigue in Multiple Sclerosis: A Systematic Review and Meta-Analysis.
    López-Muñoz P; Torres-Costoso AI; Fernández-Rodríguez R; Guzmán-Pavón MJ; de Arenas-Arroyo SN; Basco-López JÁ; Reina-Gutiérrez S · Nutrients · 2023
    Meta-analysis345 participants5 studies pooledEnergy forVitamin D
  12. Vitamin D Supplementation in Adolescents and Young Adults With Juvenile Systemic Lupus Erythematosus for Improvement in Disease Activity and Fatigue Scores: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Lima GL; Paupitz J; Aikawa NE; Takayama L; Bonfa E; Pereira RM · Arthritis care & research · 2016
    Randomized trial40 participantsEnergy forVitamin D
  13. Vitamin D in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After COVID-19 or Vaccination: A Randomized Controlled Trial.
    Kodama S; Nakata M; Konishi N; Yoshino M; Fujisawa A; Naganuma M; Kobayashi Y; Hirai Y; Kitagawa A; Miyokawa M; Mishima R; Teramukai S; Fukushima M · Nutrients · 2026
    Randomized trial91 participantsEnergy forVitamin D
  14. The effects of vitamin D supplementation on disease activity and fatigue in Libyan rheumatoid arthritis patients.
    Elfituri S · Reumatologia · 2024
    Randomized trial68 participantsEnergy forVitamin D
  15. The effect of home-based aerobic training and vitamin D supplementation on fatigue and quality of life in patients with multiple sclerosis during COVID-19 outbreak.
    Bahmani E; Hoseini R; Amiri E · Science & sports · 2022
    Randomized trial40 participantsEnergy forVitamin D
  16. Vitamin D supplementation for prevention of mortality in adults.
    Bjelakovic G; Gluud LL; Nikolova D; Whitfield K; Wetterslev J; Simonetti RG; Bjelakovic M; Gluud C · The Cochrane database of systematic reviews · 2014
    Meta-analysis95,286 participants159 studies pooledGeneral Health forVitamin D
  17. Effect of vitamin D on gastrointestinal symptoms and health-related quality of life in irritable bowel syndrome patients: a randomized double-blind clinical trial.
    Abbasnezhad A; Amani R; Hajiani E; Alavinejad P; Cheraghian B; Ghadiri A · Neurogastroenterology and motility · 2018
    Randomized trial90 participantsGeneral Health forVitamin D
  18. The impact of vitamin D administration on mortality in COVID-19 patients: a systematic review and meta-analysis of randomized controlled trials.
    Kow CS; Ramachandram DS; Hasan SS; Wong Z; Thiruchelvam K · Inflammopharmacology · 2024
    Meta-analysis2,495 participants19 studies pooledGeneral Health forVitamin D
  19. Vitamin D Status and Mortality: A Systematic Review of Observational Studies.
    Heath AK; Kim IY; Hodge AM; English DR; Muller DC · International journal of environmental research and public health · 2019
    Systematic review84 studies pooledGeneral Health forVitamin D
  20. Meta-analysis of long-term vitamin D supplementation on overall mortality.
    Zheng Y; Zhu J; Zhou M; Cui L; Yao W; Liu Y · PloS one · 2014
    Meta-analysis42 studies pooledGeneral Health forVitamin D
  21. Vitamin D supplementation to prevent acute respiratory infections: individual participant data meta-analysis.
    Martineau AR; Jolliffe DA; Greenberg L; Aloia JF; Bergman P; Dubnov-Raz G; Esposito S; Ganmaa D; Ginde AA; Goodall EC; Grant CC; Janssens W; Jensen ME; Kerley CP; Laaksi I; Manaseki-Holland S; Mauger D; Murdoch DR; Neale R; Rees JR; Simpson S; Stelmach I; Trilok Kumar G; Urashima M; Camargo CA; Griffiths CJ; Hooper RL · Health technology assessment (Winchester, England) · 2020
    Meta-analysis11,321 participants25 studies pooledImmunity forVitamin D
  22. Association Between Vitamin D and Influenza: Meta-Analysis and Systematic Review of Randomized Controlled Trials.
    Zhu Z; Zhu X; Gu L; Zhan Y; Chen L; Li X · Frontiers in nutrition · 2022
    Meta-analysis4,859 participants10 studies pooledImmunity forVitamin D
  23. Vitamin D3 and deconvoluting a rash.
    Ernst MK; Evans ST; Techner JM; Rothbaum RM; Christensen LF; Onay UV; Biyashev D; Demczuk MM; Nguyen CV; Honda KS; McCormick TS; Tsoi LC; Gudjonsson JE; Cooper KD; Lu KQ · JCI insight · 2023
    Randomized trial28 participantsImmunity forVitamin D
  24. Effect of vitamin D3 supplementation on cellular immunity and inflammatory markers in COVID-19 patients admitted to the ICU.
    Bychinin MV; Klypa TV; Mandel IA; Yusubalieva GM; Baklaushev VP; Kolyshkina NA; Troitsky AV · Scientific reports · 2022
    Randomized trial110 participantsImmunity forVitamin D
  25. Current opinion on the role of vitamin D supplementation in respiratory infections and asthma/COPD exacerbations: A need to establish publication guidelines for overcoming the unpublished data.
    Anitua E; Tierno R; Alkhraisat MH · Clinical nutrition (Edinburgh, Scotland) · 2022
    Meta-analysis50,554 participants65 studies pooledImmunity forVitamin D
  26. Effect of Two Different Doses of Vitamin D Supplementation on Metabolic Profiles of Insulin-Resistant Patients with Polycystic Ovary Syndrome.
    Jamilian M; Foroozanfard F; Rahmani E; Talebi M; Bahmani F; Asemi Z · Nutrients · 2018
    Randomized trial90 participantsTestosterone Support forVitamin D
  27. Androgens and hirsutism score of overweight women with polycystic ovary syndrome improved after vitamin D treatment: A randomized placebo controlled clinical trial.
    Al-Bayyari N; Al-Domi H; Zayed F; Hailat R; Eaton A · Clinical nutrition (Edinburgh, Scotland) · 2021
    Randomized trial60 participantsTestosterone Support forVitamin D
  28. Association between plasma 25-OH vitamin D and testosterone levels in men.
    Nimptsch K; Platz EA; Willett WC; Giovannucci E · Clinical endocrinology · 2012
    Case-control study1,362 participantsTestosterone Support forVitamin D
  29. Causal Link Between Vitamin D and Total Testosterone in Men: A Mendelian Randomization Analysis.
    Chen C; Zhai H; Cheng J; Weng P; Chen Y; Li Q; Wang C; Xia F; Wang N; Lu Y · The Journal of clinical endocrinology and metabolism · 2020
    Other4,254 participantsTestosterone Support forVitamin D
  30. Associations of vitamin D status and vitamin D-related polymorphisms with sex hormones in older men.
    Rafiq R; van Schoor NM; Sohl E; Zillikens MC; Oosterwerff MM; Schaap L; Lips P; de Jongh RT · The Journal of steroid biochemistry and molecular biology · 2017
    Cohort study643 participantsTestosterone Support forVitamin D