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Nutrition Geeks Vitamin D 1000 IU
Product analysis · Nutrition Geeks

Nutrition Geeks Vitamin D 1000 IU

D3 · Tablet

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
15/20
Value
19/20
Dose transparency
14/15
Manufacturer transparency
9/10
Label/ingredient transparency
5/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing transparency: 3/25
£5.94Amazon
TabletFormat
1,000 IU / 25 µgDaily dose
365 tabletsPack size
£0.02Price/day
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The score, explained

Our scoring methodology
Testing & evidence12.8/100
3 points contributed · weighting 25
Ingredient/formulation quality75/100
15 points contributed · weighting 20
Value95/100
19 points contributed · weighting 20
Dose transparency95/100
14 points contributed · weighting 15
Manufacturer transparency85/100
9 points contributed · weighting 10
Label/ingredient transparency50/100
5 points contributed · weighting 10

The score compares product data, not medical effectiveness or individual suitability. Prime and affiliate commission contribute no points.

Testing & evidence

Testing claimed

Evidence status
Testing claimed
Manufacturer statement
Manufacturer site has a general claim of an "Update on Third Party Testing" and says "we have the evidence to prove it" plus "an independent third-party lab retested the exact same batch" — but this is on a different product (Ashwagandha/Milk Thistle), not this Vitamin D 1000iu product, and I did not find an independently verifiable testing/certification page for the Vitamin D product itself.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-14 11:41:41

Dose & value

Vitamin form
D3Tablet
Daily dose
1,000 IU25µgAbove UK routine amount
Serving size
1 tablet
Pack size
365 tablets
Servings per day
1
Price per day
£0.02
Price last checked
2026-09-11 17:39:26

Daily cost uses the recorded label serving; a larger dose earns no value advantage. The label serving is not a recommendation for your personal intake.

Vitamin D formulation details

Comparison type (D2 / D3 / D3 + K2)
D3
Vitamin form (D2 / D3)
D3
IU / serving
1000
Micrograms / serving
25
IU / day
1000
Micrograms / day
25
Micrograms printed on label
25
D3 source, where disclosed
Not disclosed
Vegan D3 (yes / no / unknown / not applicable)
no
K2 included (yes / no / unknown)
no
K2 form
Not included
K2 / serving (micrograms)
Not disclosed
Carrier oil, where disclosed
Not disclosed
Pack size as labelled
365 tablets
Recommended serving / frequency
1 tablet daily
Comparison basis for a label serving range
Not disclosed
Additional active ingredients
No additional active ingredient declared
Allergen statement
Not disclosed; check current pack
Vegan / vegetarian label status
Vegetarian; manufacturer states not vegan

Product sources & research notes

Listing and manufacturer details describe the label; they do not independently verify product claims. Check the current pack before use.

Ingredients & suitability

Vegetarian

Excipients
Plant-Based Binding Agent: Microcrystalline Cellulose, Vitamin D3 (1000IU) as Cholecalciferol, Plant-Based Anti-Caking Agent: Magnesium Stearate
Allergens
Not disclosed; check current pack
Carrier / source
Not disclosed
Other active ingredients
No additional active ingredient declared

Manufacturer transparency

Brand
Nutrition Geeks
Legal company
Unicorn Brands Ltd
Manufacturing model
In-house claimed (not independently confirmed)
Manufacturing location
United Kingdom

View the full brand profile →

What the record makes clear

  • Active amount is disclosed.
  • Daily cost can be calculated from the recorded serving.

What to keep in mind

  • Verify the current label and the batch covered by any testing report.
  • A product score cannot determine whether you need a supplement.

Explore the alternatives

Compare alternative

WeightWorld Vitamin D3 4000 IU

Why this score?
Testing & evidence
22/25
Ingredient/formulation quality
16/20
Value
17/20
Dose transparency
14/15
Manufacturer transparency
9/10
Label/ingredient transparency
7/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Verified independent evidence
Manufacturer statement
Attached to test report no. 26C22329 ... TESTING COMPLIANCE CERTIFICATE ... Sample description: WEIGHTWORLD VITAMIN D3 40001U 400 TABLETS - BATCH CODE: 429462 ... The analyzed sample is compliant ... Vitamin D3 100 μg/tablet ...
Laboratory
Neotron Spa
Certification body
Not recorded
Batch
429462
Batch-specific report
Recorded
Report date
Not recorded
Evidence checked
2026-09-14 11:22:54
£0.02per day
£8.99per pack
View AnalysisBuy Nowon Amazon
Compare alternative

Igennus Vegan Vitamin D3 1000 IU

Why this score?
Testing & evidence
21/25
Ingredient/formulation quality
16/20
Value
11/20
Dose transparency
14/15
Manufacturer transparency
7/10
Label/ingredient transparency
7/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Recognised certification
Manufacturer statement
Nutrasource registry page states: "IGEN™ Certified" and "This product has PASSED because it does not contain detectable amounts of genetically engineered GMO proteins and genes included in the IGEN™ testing panel."
Laboratory
Not recorded
Certification body
Nutrasource IGEN™
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-14 11:33:24
£0.05per day
£19.99per pack
View AnalysisBuy Nowon Amazon
Compare alternative

Nutravita Vitamin D3 4000 IU Softgels

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
16/20
Value
18/20
Dose transparency
14/15
Manufacturer transparency
9/10
Label/ingredient transparency
7/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Nutravita’s Ingredients page says: “any ingredient selected goes through strict testing to make sure it complies with EU standards” and “The testing is done in-house at the manufacturing site…”; the product page also says “Laboratory tested products.”
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-14 11:16:53
£0.02per day
£7.64per pack
View AnalysisBuy Nowon Amazon