Why this exists
Research compounds — peptides, SARMs, experimental pharma — get written about in three places: forum threads (loud but unreliable), supplement vendor blogs (optimised for a sale), and PubMed (accurate but impenetrable). That gap is where SupplementCycle lives.
Every compound page follows the same skeleton: mechanism, key benefits, typical protocols, timeline, side effects, references. Where the human evidence is thin — most SARMs, most experimental peptides — we say so, and we link to the primary source. “Study on one type of cell in a dish” doesn't get written up like a Phase-3 trial here.
What it isn't
SupplementCycle is not medical advice. It is not a pharmacy and sells nothing itself. It has no signup and no paywall. It does not tell you to take anything.
Many compounds covered here are prescription-only, experimental, or outright unapproved for human use in the UK and other jurisdictions. The site aims to help you understand the mechanism, the maths, and the evidence — so you can have a better conversation with a doctor, not skip one.
How the site is paid for
Running this costs money, and the plan is for the site to cover its own costs. Google's advertising code is on the site now; ads begin appearing once Google has reviewed and approved it. Some outbound links to retailers will later be affiliate links that pay a commission on a sale — those will be labelled as such where they appear.
What that money does not buy: which compounds are listed, how they rank for a goal, what the evidence tiers say, or what the safety flags warn about. Those come from the data and the cited sources, and no advertiser or retailer has any say in them. If that ever stops being true, this page will say so first.
Where the data comes from
The compound catalogue structure is derived in part from the open-source peptide-db project (MIT-licensed) and has been rewritten, restructured, and extended for SupplementCycle. Citations on each compound page link to the underlying clinical trials, PubMed records, and regulatory documents.
The calculators (reconstitution, TDEE + GLP-1 projection) are built from published equations and trial endpoints — each page shows the formula and the sources it was fit to.
UK-first, but not UK-only
The disclaimers and legal framing on this site are tuned to the UK regulatory environment (MHRA, GPhC) because that's where the project is based. If you're reading from another jurisdiction, the education still applies — the legal status and availability of specific compounds almost certainly doesn't. Check your own regulator.
Feedback
SupplementCycle is new and under active build. If you spot an error, a stale citation, or a compound that badly needs a page, we want to hear it. A public feedback channel is coming shortly — until then, pull requests and issues on the source repo are the best route.