WeightWorld Vitamin D3 4000 IU
Vitamin D£0.02/dayVerified independent evidence
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Compare supplements properly.
Independent product comparisons based on dosage, formulation, price, testing evidence and manufacturer transparency.
186+ products comparedEvidence-based scoring methodologyUK market prices and productsIndependent affiliate links don't affect scores
Compare Supplements
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Highest-Rated Products
Top scoring supplements across all active categories.
WeightWorld Vitamin C 1000mg
Vitamin C£0.05/dayVerified independent evidence
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Together Health Organic Ashwagandha
Ashwagandha£0.10/dayManufacturer COA
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SCI-MX Creatine Monohydrate
Creatine£0.17/dayRecognised certification
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Igennus Fish Oil + Vitamin D3
Omega-3£0.30/dayRecognised certification
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Igennus Super B12 Complex 1000µg
Vitamin B12£0.08/dayRecognised certification
View analysis How We Compare
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Dose that actually matters
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Testing evidence
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Real cost
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Formulation & transparency
We assess ingredient forms, concentrations and label clarity.
Top-Rated Supplement Brands
Brands with the highest average scores (minimum 3 products).
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186+ products compared8 active categories24 independently verifiedIndependent analysis affiliate links don't affect scores