Solgar Vitamin D3 1000 IU (25mcg) Softgels - 250 Count vs Holland & Barrett Vitamin D3 4000 IU (100mcg) Tablets - 120 Count
Side-by-side AI analysis based on real user reviews from Reddit, Amazon, YouTube & more.
Score Comparison
|
Solgar Vitamin D3 1000 IU (...
Solgar
|
Holland & Barrett Vitamin D...
Holland & Barrett
|
|
|---|---|---|
| Overall Score | 8 | 7 |
| Effectiveness | 6/10 |
7/10
Best
|
| Ingredient Quality |
9/10
Best
|
5/10 |
| Value for Money | 8/10 |
9/10
Best
|
| Side Effects |
10/10
Best
|
9/10 |
| Certifications |
6/10
Best
|
4/10 |
| Best Price | £14.99 |
£6.99
Cheapest
|
| Form | Softgels | Tablets |
| Dose | 1000 IU (25mcg) Vitamin D3 | 4000 IU (100mcg) Vitamin D3 |
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 2 | 3 |
Solgar Vitamin D3 1000 IU (25mcg...
Pros
- +Ultra-clean two-ingredient formulation with oil carrier
- +250-count bottle provides exceptional long-term value
- +Well-established brand with decades of quality track record
- +Small, easy-to-swallow softgels
Cons
- -1000 IU may be too low for many UK adults needing repletion
- -Contains bovine gelatin — not suitable for vegetarians
- -No third-party testing certification displayed
Best For
Holland & Barrett Vitamin D3 400...
Pros
- +Lowest price per serving in the vitamin D3 category
- +High 4000 IU dose in a single tablet
- +120-count bottle lasts 4 months
- +Widely available across all Holland & Barrett stores
Cons
- -Multiple bulking agents and anti-caking agents compared to cleaner alternatives
- -Tablet format without oil carrier may reduce fat-soluble absorption
- -Large, chalky tablets that some find unpleasant to swallow
Best For
AI Comparison Analysis
Solgar Vitamin D3 1000 IU (25mcg) Softgels - 250 Count vs Holland & Barrett Vitamin D3 4000 IU (100mcg) Tablets - 120 Count
Solgar Vitamin D3 1000 IU (25mcg) Softgels - 250 Count: Solgar Vitamin D3 1000 IU is a reliable, well-formulated product from one of the most respected supplement brands globally. The minimal ingredient list and oil-based softgel format ensure good bioavailability. However, at only 1000 IU per softgel, many UK adults may find the dose insufficient based on current research suggesting 2000-4000 IU daily for optimal levels. The 250-count bottle does offer excellent value if you only need a maintenance dose.
Scores: effectiveness: 6/10, ingredient_quality: 9/10, value_for_money: 8/10, side_effects: 10/10, certifications: 6/10, overall: 8/10
Holland & Barrett Vitamin D3 4000 IU (100mcg) Tablets - 120 Count: Holland & Barrett's Vitamin D3 4000IU is a functional, affordable option that delivers an effective dose at the lowest price in its category. User blood test results confirm it works for raising vitamin D levels. However, the tablet format with bulking agents is less elegant than oil-based softgels, and absorption may be somewhat reduced without a lipid carrier. It is best suited for budget-conscious consumers who prioritise price over formulation quality.
Scores: effectiveness: 7/10, ingredient_quality: 5/10, value_for_money: 9/10, side_effects: 9/10, certifications: 4/10, overall: 7/10
Disclaimer: AIScored provides AI-generated comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.