Methodology
PeptideClear publishes editorial comparison across four UK peptide categories: cosmetic skincare peptides, ingestible collagen, research peptides, and prescription GLP-1 weight loss. Each category has its own methodology page because the regulatory regimes differ (cosmetic, food supplement, research-use-only chemical, and POM medicine respectively). The shared framework below covers source-tier ranking, comparison criteria, refresh cadence (reviewed quarterly), and a documented conflict-of-interest position. Editorial byline: Oliver Mackman. We are not a pharmacy and not a clinic.
Methodology by category
- · GLP-1 clinics and online pharmacies, licensed prescription medicines (semaglutide, tirzepatide). GPhC + GMC + trading-history criteria.
- · Research peptides, research-use-only chemicals. CoA Trust Index criteria. Linked to the CoA Trust Index.
- · Cosmetic peptide skincare, licensed topicals. INCI position, formulation transparency, clinical-claim substantiation.
- · Collagen supplements, food-supplement category. Source, dose, peer-reviewed substantiation.
- · Longevity clinics, emerging UK private-clinic tier.
The detail below is the shared framework that all five category methodologies apply.
Criteria for clinic and pharmacy listings
- · UK-licensed pharmacy (GPhC registration verified)
- · Prescriber on payroll or under contract (named, not anonymous)
- · Published, transparent pricing
- · Published switching, pause, and cancellation terms
- · At least 12 months of UK trading history
- · Published transparency on COA and complaints handling
- · No grey-market or compounded GLP-1 supply
- · Cold-chain delivery infrastructure for tirzepatide and semaglutide
Comparison criteria (per clinic / pharmacy profile)
- · Onboarding (questionnaire vs full clinical consultation)
- · Coach, app, and check-in cadence
- · Cost per typical month at a typical maintenance dose
- · Switching policy (Wegovy to Mounjaro and vice versa)
- · Pause and cancellation terms
- · Maintenance-dose policy at goal weight
- · HRT or fertility-aware co-prescribing (where relevant)
- · UK delivery coverage
- · Regulatory registration and published transparency (GPhC or CQC registration, COA and complaints handling)
Refresh cadence
Clinic and pharmacy profiles are refreshed quarterly or whenever a partner notifies us of a material change (price, policy, registration).
Conflict of interest
Some clinics and pharmacies on the site are referral partners. Inclusion in the directory is not contingent on a referral relationship. Our editorial framework is documented in our editorial policy; our funding model in how we are funded.