Vitamin D-3 2000 IU

Source Naturals

4.8

★ ★ ★ ★ ★

(2715 ratings)

Vitamin D 2000 IU

Score

A focused 2,000 IU D3 capsule offers practical maintenance dosing and strong value. Calcium-form and carrier details are incomplete, but the active purpose remains clear.

How scoring works

Quantity:200 Capsule(s) • (200 servings)

Goals:

Testosterone Support

General Health

Anti-Aging

Immunity

Anti-Inflammatory Support

Energy

Score 85

A focused 2,000 IU D3 capsule offers practical maintenance dosing and strong value. Calcium-form and carrier details are incomplete, but the active purpose remains clear.

How scoring works

Also available as

2 options

5000 IU • 240 servings D 5000 IU • 240 Capsule(s) • 240 servings $16.67 ($0.06 per serving) 5000 IU • 120 servings D 5000 IU • 120 Capsule(s) • 120 servings $8.00 ($0.06 per serving)

$12.95($0.06 per serving)

iHerb	$ 12.95
Vitacost	$ 12.95
Amazon	$ 12.95

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Analysis

Vitamin D3 at 2,000 IU provides a useful adult maintenance amount in one capsule. The focused formula is easy to understand and avoids a complicated blend.

A small 51 mg calcium addition is included, although its chemical form is not stated. No oil carrier or D3 source is identified, so absorption and traceability cannot be fully evaluated.

The 200-serving bottle supports convenient long-term use and strong value. It fits adults who want a routine D3 capsule and do not need a higher calcium amount or detailed sourcing information.

Who is it for

Adults seeking a 2,000 IU daily D3 capsule
People who prefer a focused formula
Long-term users who value a large serving count

Best for

Routine vitamin D maintenance
One-capsule dosing
Economical long-supply use

Pros

Uses vitamin D3
Provides a practical 2,000 IU amount
Requires one capsule per serving
Offers strong serving value

Cons

The calcium form is not identified
No oil carrier is listed
The D3 source and complete excipients are not supplied

Warnings

Total vitamin D intake should include other supplements and fortified foods
People prone to high calcium levels should review ongoing D3 use before combining it with calcium products
The 51 mg calcium contribution may matter to users following a tightly controlled calcium plan

Nutrient quality

Highest impact

Cholecalciferol has a suitable form and useful routine amount. The token calcium addition neither broadens the formula much nor creates obvious imbalance.

Ingredient transparency

Highest impact

Both active amounts are clear without a hidden blend. Missing directions, calcium-source detail, and capsule excipients leave smaller label gaps.

Customer satisfaction

High impact

The aggregate satisfaction signal is exceptionally strong and supported by extensive volume. Missing review details prevent assessment of recurring complaints or ease of use.

Value for money

Highest impact

A suitable form, meaningful amount, and large supply provide excellent value. The small calcium addition does little but does not materially weaken competitiveness.

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Goals

Selected only

Testosterone Support

Impact

Highest effect

A-

Goal Fit

A+

Strength of Support

C-

Coverage

A+

Formula Quality

Vitamin D · 2000 IU

Vitamin D3 provides a foundational nutrient involved in normal endocrine function. The 2000 IU amount matches the stated target for foundational support.

Cholecalciferol is the preferred clearly disclosed form. The single-nutrient design provides depth in one pathway rather than broad hormone support.

Study evidence

Vitamin D Supportive 56 studies

General Health

Impact

Highest effect

A+

Goal Fit

Strength of Support

Coverage

Formula Quality

Vitamin D · 2000 IU

Vitamin D3 supports foundational bone, immune, and muscle functions. The single vitamin influences bone, immune, and muscle pathways but does not fill multiple nutrient gaps.

The 2,000 IU vitamin D3 dose fits the preferred daily range. Cholecalciferol is the preferred D3 form and its amount is clear, but no oil carrier or raw source is disclosed.

Study evidence

Vitamin D Supportive 115 studies

Anti-Aging

Impact

Highest effect

B+

Goal Fit

B+

Strength of Support

Coverage

Formula Quality

Vitamin D · 2000 IU

Vitamin D3 supports bone, muscle, immune, and mood-related functions that can become vulnerable with age. Its value is foundational and strongest when vitamin D status is low rather than as a direct healthspan-extending compound.

The 2,000 IU amount is suitable for routine support, and cholecalciferol is the preferred vitamin D form. No oil carrier or raw source is disclosed, while the small calcium addition does not meaningfully broaden the formula.

Study evidence

Vitamin D Supportive 50 studies

Immunity

Impact

High effect

Goal Fit

B+

Strength of Support

D+

Coverage

A-

Formula Quality

Vitamin D · 2000 IU

The capsule supplies 2,000 IU of vitamin D3, a meaningful amount for immune signaling and barrier maintenance. Cholecalciferol is an appropriate form for supporting vitamin D status.

No oil carrier is disclosed, so absorption may depend more on taking the capsule with food containing fat. The small calcium addition does not materially broaden immune support.

Study evidence

Vitamin D Supportive 85 studies

Anti-Inflammatory Support

Impact

High effect

B+

Goal Fit

A-

Strength of Support

D+

Coverage

A-

Formula Quality

Vitamin D · 2000 IU

Vitamin D3 provides direct immune-regulating support relevant to inflammatory balance. The 2,000 IU serving falls within a practical daily range.

The capsule has no stated oil carrier or raw vitamin source, which limits delivery and sourcing confidence. A small calcium amount adds little anti-inflammatory value but does not substantially dilute the formula.

Study evidence

Vitamin D Supportive 101 studies

Energy

Impact

High effect

C+

Goal Fit

B+

Strength of Support

Coverage

B+

Formula Quality

Vitamin D · 2000 IU

Vitamin D3 may support fatigue related to low vitamin D status, but it is not a broad or immediate energy aid. The clearly listed amount is within a common daily supplemental range.

The capsule has no stated oil carrier, which may limit absorption compared with lipid-based delivery. A small calcium amount does not meaningfully broaden support for energy pathways.

Study evidence

Vitamin D Supportive 32 studies

Ingredients

Display goals

Ingredient	Amount per serving
Calcium	51 mg
Vitamin D3 (Cholecalciferol)	2000 IU

Report overview

Vitamin D (Cholecalciferol) · 2000 IU OverallScore

B-

Active Ingredient Quality & Bioavailability

C+

Dose, Safety & Label Transparency

B+

Value

The 2,000 IU vitamin D3 dose fits the preferred daily range. The capsule is not shown to use an oil carrier, and the raw vitamin source is undisclosed. Cost efficiency is good, while independent verification remains unconfirmed.

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Performance

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Performance

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Performance

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Clear active disclosure and a focused cholecalciferol supplement make dosing more predictable. The 2000 IU amount is close to the original routine dose with similarly focused vitamin D support. Complete carrier, excipient, and usage details remain unavailable.

Budget

Liquid Vitamin D3 Drops 1000 IU Natural Citrus Flavor

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A much lower serving cost comes with liquid drops with lanolin-derived vitamin D3. The 1000 IU amount is close to the original routine dose with similarly focused vitamin D support. The lower amount may be insufficient when the full original dose is intentional.

Budget

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Budget

D3 Supplement 1000 IU

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A much lower serving cost comes with a focused cholecalciferol supplement. The 1000 IU amount is close to the original routine dose with similarly focused vitamin D support. The lower amount may be insufficient when the full original dose is intentional.

Value

Vitamin D-3 1000 IU

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Strong serving value and a focused lanolin-derived vitamin D3 formula provide a practical focused option. The 1000 IU amount is close to the original routine dose with similarly focused vitamin D support. The lower amount may be insufficient when the full original dose is intentional.

Value

Extra Strength Liquid Vitamin D3

Protocol For Life Balance

Strong serving value and economical liquid vitamin D3 provide a practical focused option. The 2000 IU amount is close to the original routine dose with similarly focused vitamin D support. Complete carrier, excipient, and usage details remain unavailable.

Value