The Supplement Compare is an independent comparison site for supplements and, in the UK, research peptides. We line products up on the things that actually separate them: dose or quantity, price per unit, ingredient form, testing evidence and how transparent the seller is. That way you compare like with like, not marketing claims.
Why we built it
Most “best supplement” content online is thin marketing copy, an affiliate blog ranking products by commission rate, or a listicle that never opens the actual label. We wanted a place that compares real numbers side by side, is honest about what is not known yet, and never lets a commercial relationship touch a score.
What we compare
Supplements. Active dose per serving, cost per day, ingredient forms, third-party testing and manufacturer transparency, across categories such as magnesium, creatine, vitamin D, omega-3 and ashwagandha.
Research peptides (UK). Labelled quantity, price per mg, testing evidence and supplier transparency for research-use-only products from UK suppliers. Research peptides are not medicines or supplements, and nothing on the site is a recommendation to use them.
How products are scored
Every product goes through the same structured framework, described in full on our Methodology page and broken down on How We Score Products. Where evidence is incomplete we say so rather than smoothing it over. See How We Verify Testing for how we tell a marketing claim apart from a checkable fact.
How the site is funded
Some links on the site are affiliate links, so we may earn a commission if you buy through them. That commission never changes a score, a ranking or which products we include. Read our Affiliate Disclosure for the details.
Our independence
We are an independent site. We are not owned by, and do not receive payment from, any supplement or peptide supplier to influence a score or ranking. If we get something wrong, tell us: our Corrections Policy explains how we handle it, and you can report an issue through the contact form.
What we are not
We are not a medical service and do not give medical advice. Scores describe the evidence and value we can check, not whether a product is safe or right for you. See our Medical Disclaimer.