Why this exists
Peptide Handbook is the UK's evidence-first guide to peptides, performance, and longevity. We exist because the gap between what the science actually says and what the market is selling has become large enough to be hazardous — and nobody UK-based was filling it.
Our position
We believe most readers approaching this category deserve three things: clear summaries of the published evidence; honest distinctions between high-evidence and low-evidence compounds; and explicit, current guidance on UK legal status. Most existing sources do at most one of these.
We are educational. We are not a clinic, not a vendor, not an affiliate marketer, and not a forum. Every page on this site links back to primary sources. Confidence levels are graded against trial design, sample size, and replication — not against what would make the most sales.
Editorial team
- Dr. Rachel Okonkwo — MBBS, Endocrinology (GMC reg. 7211983). Reviews GLP-1 and metabolic compound profiles.
- Dr. Mark Halligan— MBChB, Sports & Exercise Medicine (GMC reg. 6622401). Reviews recovery and growth-hormone-axis content.
- Dr. Caitlin Reeve — PhD, Sleep Neurophysiology, Imperial College London. Reviews sleep and cognitive content.
- Dr. Nadia Hassan — PhD, Mitochondrial Biology, University of Manchester. Reviews longevity and mitochondrial-derived peptide content.
Funding and independence
Peptide Handbook is independently funded. We do not sell products. We do not earn affiliate commission on peptide purchases or clinic referrals. We do not accept editorial input from manufacturers, distributors, or peptide vendors. Funding sources will be disclosed publicly in full.
Contact
For corrections, evidence updates, partnership inquiries, or press: hello@peptidehandbook.co.uk.
For Yellow Card-equivalent reporting of suspected counterfeit medicines or adverse reactions, please contact the MHRA directly via yellowcard.mhra.gov.uk.