Why we do not provide dosing or sourcing advice

Peptide Authority is a research and risk-intelligence publisher. We are not a clinic, not a pharmacy, and not a retailer. This page explains, in plain language, why we will not publish dosing instructions, reconstitution recipes, injection technique, or supplier rankings for unlicensed peptides — and what we publish instead.

Why no dosing

1. Most of the compounds we cover are not licensed UK medicines. For an unlicensed compound there is no MHRA- approved dose, no SmPC, no Patient Information Leaflet, no NICE appraisal of dose-response, and no clinical pharmacology authority to anchor a number to. Publishing a number anyway would be inventing one — or copying one out of a bodybuilding forum.
2. A dose depends on an individual. Even when a number exists in trial data, applying it to a real person requires knowing their weight, comorbidities, current medications, age, sex, kidney/liver function, pregnancy status, and treatment goal. That is a prescriber's job. We are not your prescriber and we cannot do that job from a webpage.
3. UK law treats human-use dose claims as advertising of medicine. Publishing a recommended dose for a peptide alongside a claim it treats a condition is, in regulatory terms, advertising a medicinal product — and for unlicensed substances that is unlawful under Part 14 of the Human Medicines Regulations 2012. We discuss the regime in detail at UK peptide advertising rules.
4. We cannot verify what is in a vial. Vials sold online as “X” do not necessarily contain X, at the labelled concentration, free of contaminants. A “dose” is meaningless without verified contents. See the MHRA counterfeit-medicine track record on the counterfeit medicine timeline.

For licensed medicines

For licensed UK medicines (e.g. semaglutide as Wegovy / Ozempic, tirzepatide as Mounjaro, liraglutide as Saxenda), we point readers to:

• The Summary of Product Characteristics (SmPC) on the EMC — the authoritative document for prescribers.
• The Patient Information Leaflet that comes with the pen.
• The reader's own UK prescriber and pharmacist.

We do not republish doses from the SmPC as Peptide Authority guidance, because doing so risks creating the impression that we are providing prescribing advice. We are not.

Why no sourcing

1. Supplying prescription-only medicines without a prescription is a UK offence. Ranking suppliers, recommending vendors, or publishing “where to buy” lists could be construed as facilitating that offence — even if we are careful to call the supply “research only”.
2. Unregulated peptide supply has a documented safety record of contamination, mislabelling, and outright counterfeit. The harm rate from this market is real and measurable.
3. A “trusted supplier” today is not a trusted supplier next month. Lot quality drifts; ownership changes; the supplier that was independently tested in 2023 may fail testing in 2026. Static lists go stale fast and become dangerously misleading.
4. The reader who needs a peptide medicine has a lawful UK route. For licensed medicines: NHS, where eligible ( NHS access pathway), or a GMC-registered private prescriber working with a regulated UK pharmacy ( private clinics). For unlicensed compounds, the lawful route is enrolment in a registered clinical trial, or non-use.

One disclosed affiliate exception

We disclose a single referral relationship to Peptide Barn for research-grade peptide supply — covered in detail at affiliate disclosure. That single placement is not a recommendation of Peptide Barn over other suppliers, is not a ranking, and is not present on Safety Centre, UK Law, GLP-1 Centre, or trust / policy pages.

What we publish instead

• Per-compound evidence reviews — what trials say, where the gaps are, what UK regulators have said.
• UK regulatory framing — what the law actually is, what enforcement looks like, what a clinic / pharmacy / advertiser can and cannot lawfully do.
• Safety literacy — counterfeit identifiers, online-seller red flags, how to report adverse events to the Yellow Card scheme.
• Tools that help readers evaluate rather than do — UK pharmacy checker, fake-pen triage, doctor discussion sheet.

If you need a personalised answer

Speak to a GMC-registered doctor or a GPhC-registered pharmacist. For mental-health crisis call 999, attend A&E, or contact the Samaritans on 116 123.