Alpha01 Calcium Carbonate 400mg – Tablets
Calcium£0.05/dayVerified independent evidence
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Compare supplements and research peptides properly.
Independent product comparisons based on dose or quantity, formulation, price, testing evidence and supplier transparency.
633 products comparedEvidence-based scoring methodologyUK market prices and productsIndependent affiliate links don't affect scores
Compare Supplements
Browse our comparison pages by supplement category.
Multivitamin24 products£0.02 – £0.53/dayCompare Vitamin D22 products£0.01 – £0.35/dayCompare Omega-328 products£0.05 – £1.00/dayCompare Vitamin C24 products£0.02 – £1.79/dayCompare Magnesium22 products£0.07 – £1.30/dayCompare Probiotics25 products£0.07 – £1.07/dayCompare Calcium25 products£0.05 – £1.23/dayCompare Ashwagandha20 products£0.06 – £0.83/dayCompare Turmeric / Curcumin25 products£0.05 – £1.24/dayCompare Collagen25 products£0.09 – £1.43/dayCompare
Compare Research Peptides
Browse our comparison pages by research peptide.
BPC-15712 products£2.00 – £5.00/mgCompare Retatrutide21 products£2.25 – £8.00/mgCompare CJC-129512 products£2.45 – £20.00/mgCompare GHK-Cu13 products£0.24 – £0.50/mgCompare Ipamorelin8 products£1.75 – £8.00/mgCompare KPV5 products£2.45 – £6.00/mgCompare Melanotan II4 products£1.50 – £3.00/mgCompare MOTS-c11 products£1.00 – £5.00/mgCompare TB-5009 products£2.50 – £8.00/mgCompare Tesamorelin10 products£3.30 – £20.00/mgCompare
Highest-Rated Supplements
Top scoring supplements across all active categories.
Together Health Organic Ashwagandha
Ashwagandha£0.10/dayManufacturer COA
View analysis 
WeightWorld Magnesium 4-in-1
Magnesium£0.15/dayManufacturer COA
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WeightWorld Vitamin D3 4000 IU
Vitamin D£0.02/dayVerified independent evidence
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Igennus Fish Oil + Vitamin D3
Omega-3£0.30/dayRecognised certification
View analysis Highest-Rated Research Peptides
Top scoring research peptide products across all active categories.
MOTS-C 40mg
MOTS-c · Ascend Peptides UK£1.00/mgVerified independent evidence
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Ipamorelin 10mg
Ipamorelin · Ascend Peptides UK£2.50/mgVerified independent evidence
View analysis 
Tesamorelin 10mg
Tesamorelin · Ascend Peptides UK£4.00/mgVerified independent evidence
View analysis 
CJC-1295 With DAC 10mg
CJC-1295 · Ascend Peptides UK£3.50/mgVerified independent evidence
View analysis 
Retatrutide 40mg
Retatrutide · Reta Research£3.00/mgVerified independent evidence
View analysis How We Compare
We look beyond marketing claims to give you a clearer comparison.
Dose that actually matters
We use meaningful measures such as elemental amounts, active extracts and EPA/DHA.
Testing evidence
We distinguish manufacturer claims from public lab reports and certifications.
Real cost
We compare daily serving cost, not just bottle price.
Formulation & transparency
We assess ingredient forms, concentrations and label clarity.
Top-Rated Supplement Brands
Supplement brands with the highest average scores across their compared products (minimum 3 products).
Top-Rated Peptide Suppliers
Research peptide suppliers with the highest average product scores (minimum 3 scored products).
Latest Guides
Helpful, evidence-based guides to support informed choices.
Supplements
Third Party Tested Supplements: What the Evidence Means
Check what independent testing covers, which product it concerns and how to verify a…
Research Peptides
Peptide Price per mg: How to Compare UK Listings
Compare labelled quantities fairly and understand what price per mg can, and cannot, tell…
Supplements
Supplement Forms Explained: Capsules, Tablets and More
Understand supplement formats without assuming one shape means better ingredients or better value.
Research Peptides
How to Read a Peptide COA: A UK Guide
Read a peptide certificate of analysis and separate identity, purity and measured content.
Live data. Real comparisons. Better choices.Our database updates as new products, suppliers and testing evidence become available.
40 categories compared633 products tracked203 brands & suppliers tracked91 independently verified products