$12.95 $0.06 per serving
Product analysis
Vitamin D-3 2000 IU may help fill a vitamin D gap and support normal bone and immune function.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality73
Vitamin D uses the favorable D3 form. The calcium form is unspecified, leaving that part of the source quality uncertain.
Ingredient Transparency81
Both nutrient amounts are disclosed, helping you compare servings. D3 is identified, but the calcium form is not specified.
Value For Money67
The serving price looks favorable for the vitamin D contribution. Calcium value remains uncertain, so D3 provides the clearest basis for a price comparison.
Customer Satisfaction88
Customer feedback is very positive. Thousands of ratings provide a broad picture of satisfaction.
Product Focus75
Vitamin D provides the clearest support for normal nutrition, especially when intake or status is low. The small calcium amount adds little to that purpose, while extra energy, broad inflammation benefits or longer life are not established after vitamin D needs are met.
- Format
Capsule - Container
- 200 Capsule(s)
- Per serving
- $0.06
- Also available
Vitamin D-3 5000 IU$16.67- Customer rating
- 4.8 · 2,715 ratings
Goals
Impact
High effect
Vitamin D · 2000 IU
Vitamin D has limited findings in initially deficient men, without an established testosterone increase in nutrient-replete users.
How this product is rated for Testosterone Support
Ingredient fit79
Relevant nutritional ingredients are present, with the amount findings determining how much they contribute.
Goal fit
Relevant nutrients are accompanied by ingredients serving broader purposes.
Dose adequacy
The amounts meet the supplied comparison anchors, without establishing an effective testosterone-boosting dose.
Pathways0
No direct coverage of the evaluated hormone processes was found.
Depth
No direct coverage of the evaluated hormone processes was found.
Breadth
None of the evaluated hormone processes reaches the supplied coverage requirement.
Evidence81
Vitamin D findings depend on population and nutrient status; generalized testosterone enhancement is not established.
Evidence strength
Vitamin D findings depend on population and nutrient status; generalized testosterone enhancement is not established.
Studied preparation
The relevant declarations are accepted for comparison, without establishing equivalent hormone outcomes for this product.
Formulation logic100
No configured ingredient conflict was found. All counted ingredients meet the minimum amount comparison, which is not a proven hormone-enhancing dose.
Partner coverage
No required ingredient partner is missing in the supplied findings.
Conflicts
No configured ingredient conflict was found.
Effective doses
All counted ingredients meet the minimum amount comparison, which is not a proven hormone-enhancing dose.
Impact
Highest effect
Vitamin D · 2000 IU
Vitamin D contributes to bone and mineral nutrition and can help fill a dietary gap. The selected serving supplies 50 mcg, a substantial nutrient contribution. Its normal functions do not demonstrate broader health improvements when intake is already adequate, and the amount does not establish treatment of deficiency. The small calcium amount did not meaningfully contribute.
How this product is rated for Everyday Health
Ingredient fit93
The relevant declared amounts reach the comparison amounts; larger quantities do not establish larger health benefits.
Goal fit
The relevant ingredients give this formula a focused connection to the supplied general-health roles.
Dose adequacy
The relevant declared amounts reach the comparison amounts; larger quantities do not establish larger health benefits.
Pathways57
The strongest contribution concerns bone and mineral nutrition. Other meaningful coverage is limited to the named nutrient roles.
Depth
The strongest finding concerns bone and mineral nutrition, based on the relevant ingredients and their supplied amounts.
Breadth
Meaningful coverage extends to bone and mineral nutrition.
Evidence82
Vitamin D provides the leading evidence contribution. Nutritional functions and the preparation findings do not establish broad health improvements above adequate intake.
Evidence strength
Vitamin D leads the evidence contribution; its nutrient role does not establish extra benefit above adequate intake.
Studied preparation
The included preparations meet the preparation criteria; this does not establish superiority of a particular form.
Formulation logic100
The included ingredients can contribute without a missing required partner, and no configured conflict was found. Their amounts pass the saved minimum contribution check.
Partner coverage
The included ingredients can contribute independently or have their required partners; no extra benefit from combining them is established.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
The included amounts all meet the minimum amount used here; that threshold is not a proven clinical dose.
Impact
High effect
Vitamin D · 2000 IU
Vitamin D supports bone and muscle function, and correcting deficiency can improve weakness associated with low vitamin D. The supplied findings do not establish additional aging benefits in adequately nourished adults. The declared serving exceeds the nutritional comparison, but higher amounts do not imply greater preservation of function or longer life.
How this product is rated for Longevity
Ingredient fit79
The single ingredient makes a focused contribution to the saved amount comparison. This does not establish a broadly applicable aging benefit.
Goal fit
The formula focuses on its single declared ingredient, although that ingredient’s functions extend beyond this goal.
Dose adequacy
The retained amounts reach their supplied comparisons; higher amounts do not establish greater aging benefits.
Pathways0
The vitamin’s nutritional contribution does not translate into coverage of the defined aging pathways.
Depth
No defined aging pathway receives a retained contribution, despite the vitamin’s nutritional role.
Breadth
No area reaches the supplied coverage benchmark; this does not mean the ingredient lacks nutritional value.
Evidence83
Vitamin D leads the retained comparison, with functional benefit tied to correcting low vitamin D rather than extra benefit in replete adults.
Evidence strength
Vitamin D leads the retained comparison, with functional benefit tied to correcting low vitamin D rather than extra benefit in replete adults.
Studied preparation
The retained preparations match the supplied comparison, without proving that the whole product reproduces clinical outcomes.
Formulation logic100
The retained contributions have no missing required partners or configured conflicts, and their amounts meet the minimum comparison.
Partner coverage
No required partner is missing among the retained contributions; this does not establish extra benefit from combining them.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
The retained ingredients meet the supplied minimum amount comparison, which is not a proven threshold for slower aging.
Impact
Highest effect
Vitamin D · 2000 IU
Vitamin D contributes to normal immune-cell function, with the clearest practical role when intake is inadequate. The saved findings fully recognize its amount, but this does not establish additional respiratory-infection protection in adults with adequate status. Calcium broadens the formula without adding an independently supported immunity contribution here.
How this product is rated for Immunity
Ingredient fit79
The formula’s immune connection comes from its relevant nutrients, with amount and focus limitations reflected below.
Goal fit
Relevant nutrients share the formula with ingredients serving other goals, reducing its focus on immunity.
Dose adequacy
The declared amounts fully meet the saved comparisons; larger amounts do not imply greater immune benefit.
Pathways60
The strongest saved coverage concerns lymphocyte function and immune regulation.
Depth
The strongest saved finding concerns lymphocyte function and immune regulation; this describes supported coverage rather than infection protection.
Breadth
The saved findings cover lymphocyte function and immune regulation.
Evidence100
Vitamin D anchors the strongest recognized evidence; the supplied context limits what clinical benefits can be inferred.
Evidence strength
Vitamin D provides the strongest recognized evidence here; its benefit remains bounded by the supplied nutritional or regular-use findings.
Studied preparation
The saved findings accept the recognized forms at qualifying amounts; this does not establish that one form provides greater clinical benefit.
Formulation logic100
The recognized ingredients have no missing required partner or configured conflict.
Partner coverage
The recognized ingredients need no missing partner for their assigned contributions.
Conflicts
No configured ingredient conflict was found; this is not a full assessment of suitability.
Effective doses
All recognized ingredients meet the saved minimum amount comparison; that threshold is not proof of clinical effectiveness.
Impact
Highest effect
Vitamin D · 2000 IU
Vitamin D has mixed inflammatory-marker findings. A large trial found no reduction after one year; a later analysis found lower CRP at two years, but not four years, with other cytokines unchanged. This transient signal does not establish routine broad clinical anti-inflammatory benefit. The supplied amount contributes fully to the saved comparison without implying greater benefit at higher intake.
How this product is rated for Inflammation
Ingredient fit79
Relevant ingredients sit within a broader formula, limiting its focus on this particular goal. Recognized amounts contribute fully to the saved comparison; that is not proof of an effective clinical dose.
Goal fit
Relevant ingredients sit within a broader formula, limiting its focus on this particular goal.
Dose adequacy
Recognized amounts contribute fully to the saved comparison; that is not proof of an effective clinical dose.
Pathways57
Inflammatory gene signalling is the strongest recorded mechanism, without establishing broad clinical benefit.
Depth
Inflammatory gene signalling is the strongest recorded mechanism, without establishing broad clinical benefit.
Breadth
Only one inflammatory mechanism reached the required coverage level.
Evidence93
Vitamin D leads the saved evidence finding, with its specific population and outcome limitations still applying.
Evidence strength
Vitamin D leads the saved evidence finding, with its specific population and outcome limitations still applying.
Studied preparation
Contributing preparations matched those recognized in the saved result; this does not establish a trial of the complete product.
Formulation logic100
No missing required partner or configured conflict reduced recognized contributions. All counted amounts reached the minimum comparison threshold.
Partner coverage
No missing required partner reduced recognized contributions; this does not demonstrate extra benefit from combining ingredients.
Conflicts
No configured ingredient conflict was identified in the supplied calculation.
Effective doses
All counted ingredients reached the minimum comparison threshold, which is not a proven minimum effective clinical dose.
Impact
High effect
Vitamin D · 2000 IU
Vitamin D may help fatigue in adults who are deficient. The supplied fatigue trial used a different, large single treatment dose, so this serving does not establish the same result or an extra energy benefit when vitamin D status is adequate.
How this product is rated for Energy
Ingredient fit79
The relevant ingredients mainly address nutrient sufficiency or limited exercise-related uses; declared amounts determine their saved contribution.
Goal fit
Several ingredients connect to energy, while the broader formula also includes ingredients serving other purposes.
Dose adequacy
The relevant declared amounts receive the full amount contribution in the saved comparison; this does not establish additional benefit from larger servings.
Pathways0
The relevant nutrient contributions sit outside the listed energy routes, so none of those routes receives coverage.
Depth
No contribution was assigned to the listed alertness, exercise, mitochondrial, stress-fatigue or blood-flow routes.
Breadth
None of the listed routes reaches the comparison's coverage threshold.
Evidence95
The strongest relevant findings concern the specific nutrient or exercise context, with no automatic extra energy benefit from normal nutrient functions.
Evidence strength
Vitamin D supplies the strongest supported contribution here; its practical benefit remains limited to the relevant use and population.
Studied preparation
The contributing preparations are treated as studied in the saved findings; this does not establish that this product reproduces a trial regimen.
Formulation logic100
The contributing ingredients meet the minimum amount threshold and have no missing required partners. No configured ingredient conflict was identified.
Partner coverage
The contributing ingredients do not require a missing partner in the supplied findings.
Conflicts
No configured ingredient conflict was found in the supplied facts.
Effective doses
All contributing ingredients meet the comparison's minimum amount threshold; this is not proof that one serving produces a clinical effect.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calcium | 51 mg | |
Vitamin D3 (Cholecalciferol) | 2000 IU |
Vitamin D (Cholecalciferol) · 2000 IU OverallScore78
A serving provides 2000 IU of vitamin D3 (cholecalciferol), with a low cost for its vitamin D amount. The raw material source is not specified. No certification seal, batch certificate or GMP claim is recorded.
How this ingredient is rated
Active Ingredient Quality & Bioavailability87
The form is vitamin D3 (cholecalciferol), which can raise and maintain vitamin D levels. The raw material source is not specified.
Vitamin D3 vs. D2 Superiority
The form is vitamin D3 (cholecalciferol), which can raise and maintain vitamin D levels.
Sourcing and Active Marker Disclosure
The raw material source is not specified.
Dose, Safety & Label Transparency68
The serving provides 2000 IU of vitamin D. No certification seal, batch certificate or GMP claim is recorded.
Daily Dosage Appropriateness
A serving provides 2000 IU of vitamin D.
Excipient and Additive Purity
Titanium dioxide, artificial colors and hydrogenated oils are not listed. Sugar content is unknown.
Purity and Quality Certification
No certification seal, batch certificate or GMP claim is recorded.
Value80
The cost of the full serving is low for its vitamin D amount.
Price per 1,000 IU Efficiency
The cost of the full serving is low for its vitamin D amount.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Effect of Vitamin D Supplementation on Fatigue in Multiple Sclerosis: A Systematic Review and Meta-Analysis.
- 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.
- Vitamin D in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After COVID-19 or Vaccination: A Randomized Controlled Trial.
- The effects of vitamin D supplementation on disease activity and fatigue in Libyan rheumatoid arthritis patients.
- 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.
- Vitamin D supplementation for prevention of mortality in adults.
- Effect of vitamin D on gastrointestinal symptoms and health-related quality of life in irritable bowel syndrome patients: a randomized double-blind clinical trial.
- The impact of vitamin D administration on mortality in COVID-19 patients: a systematic review and meta-analysis of randomized controlled trials.
- Vitamin D Status and Mortality: A Systematic Review of Observational Studies.
- Meta-analysis of long-term vitamin D supplementation on overall mortality.
- Vitamin D supplementation to prevent acute respiratory infections: individual participant data meta-analysis.
- Association Between Vitamin D and Influenza: Meta-Analysis and Systematic Review of Randomized Controlled Trials.
- Vitamin D3 and deconvoluting a rash.
- Effect of vitamin D3 supplementation on cellular immunity and inflammatory markers in COVID-19 patients admitted to the ICU.
- 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.
- Vitamin D deficiency and C-reactive protein: a bidirectional Mendelian randomization study.
- Vitamin D in Children With Inflammatory Bowel Disease: A Randomized Controlled Clinical Trial.
- Vitamin D supplementation reduces infection rate and promotes wound healing in patients with diabetic foot ulcers.
- Associations of C-reactive Protein with 25-hydroxyvitamin D in 24 Specific Diseases: A Cross-sectional Study from NHANES.
- Combined effects of vitamin D deficiency and systemic inflammation on all-cause mortality and cause-specific mortality in older adults.