The Book of Peptides
Interactive peptide reference

Be fully conscious of
what you're doing.

Every compound and stack in the series — researched from primary sources, adversarially fact-checked, and written up so the evidence is easy to actually understand.

Every compound page is open to browse — full write-ups, dosing protocols, and the calculators are part of membership. $14.99/month, or $149.99/year and save $29.89.

96
Compounds
32
Stacks
31
Discovery stories
100%
Claims fact-checked
Trusted byChromatest
What your membership unlocks

The whole reference, fully written up.

Every peptide, fully profiled

Evidence tier, community rating, safety notes, and stack pairings — one sourced reference page per compound.

Scheduling protocols

Timing, frequency, and cycle length for every compound, plus the full titration ladder where one exists — shown as published, not as a recommendation.

All three books, online

Read the entire series in an interactive reader — or download the PDFs if you prefer paper.

Reconstitution reference

Every compound's published vial size and dilution, shown as a reference with the unit math laid out — not a personalized recommendation.

Free for everyoneT2 · Clinical dataScore 86 · A

Retatrutide

LY3437943 · Metabolic & Fat-Loss

Not a mockup — this is Retatrutide's actual page, glimpsed through the frame: its real published protocol, live from the reference. The full page is free for everyone — complete write-up, every documented protocol, and the live reconstitution calculator. No account needed. Every other compound is written up to exactly this standard; membership unlocks them all.

or browse the whole catalog.

Live feed

Enforcement & safety, as it happens.

Raids, recalls, prosecutions and safety alerts involving peptides and GLP-1s — gathered automatically from regulators and national press, every day.

The difference

The only peptide reference that throws claims out.

Every claim here survived an adversarial fact-check — a second pass built to refute it, not confirm it. Claims that traced to one uncorroborated source were deleted, not repeated. We publish the corrections.