NOW Foods Vitamin D-3 5000 IU (125mcg) Softgels - 240 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

NOW Foods Vitamin D-3 5000 ...

Holland & Barrett Vitamin D...

	NOW Foods Vitamin D-3 5000 ... NOW Foods	Holland & Barrett Vitamin D... Holland & Barrett
Overall Score	9	7
Effectiveness	9/10 Best	7/10
Ingredient Quality	9/10 Best	5/10
Value for Money	10/10 Best	9/10
Side Effects	8/10	9/10 Best
Certifications	8/10 Best	4/10
Best Price	£9.50	£6.99 Cheapest
Form	Softgels	Tablets
Dose	5000 IU (125mcg) Vitamin D3	4000 IU (100mcg) Vitamin D3
Third-Party Tested	✓ Yes	✗ No
Reviews Analysed	2	3

NOW Foods Vitamin D-3 5000 IU (1...

Pros

+Exceptional value — 240 servings at 5000 IU each
+Extra virgin olive oil carrier for superior absorption
+Ultra-minimal ingredient list with no fillers
+GMP-certified facility with comprehensive testing

Cons

-5000 IU may be too high for some — get blood levels checked first
-Bovine gelatin softgel not suitable for vegetarians
-iHerb shipping from US can take 1-2 weeks to UK

Best For

Value-conscious buyers wanting high-strength vitamin D Those seeking a clean, minimal-ingredient softgel People needing higher vitamin D doses for repletion

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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

Budget-conscious consumers seeking high-strength vitamin D Those who prefer buying in-store from a familiar retailer Simple daily vitamin D maintenance without extras

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AI Comparison Analysis

NOW Foods Vitamin D-3 5000 IU (125mcg) Softgels - 240 Count vs Holland & Barrett Vitamin D3 4000 IU (100mcg) Tablets - 120 Count

NOW Foods Vitamin D-3 5000 IU (125mcg) Softgels - 240 Count: NOW Foods Vitamin D3 5000 IU represents arguably the best combination of quality, potency, and value in the UK vitamin D market. The extra virgin olive oil carrier is a thoughtful choice for absorption, and the formulation contains nothing unnecessary. At 240 softgels per bottle, the cost per serving is remarkably low, especially when purchased from iHerb. The GMP certification and NOW Foods' extensive in-house testing programme provide solid quality assurance.

Scores: effectiveness: 9/10, ingredient_quality: 9/10, value_for_money: 10/10, side_effects: 8/10, certifications: 8/10, overall: 9/10

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.