Make sense of the science

Go deeper.

Long-form reading that connects the compounds, communities, and evidence.

Field guide↗

Healing Peptides in 2026: Two Internets, One Real Question

This category is a 14-product market built on almost no human clinical evidence — and it runs anyway, because tens of thousands of people with stubborn tendon, ligament, and gut complaints say they've run out of other options. The research files behind this review cover every item, priced and tiered from real community observation (September 2026). Here is what that evidence actually supports, and what it doesn't.

Field guide↗

Growth Hormone Secretagogues: Who Should Buy What, and What to Dodge in 2026

Growth hormone secretagogues are the peptide scene's workaround for an awkward fact: actual human growth hormone is expensive, prescription-only, and counterfeited relentlessly. Instead of injecting GH itself, these compounds nudge your own pituitary to pulse more of it — either by mimicking GHRH, the "go" signal (CJC-1295, sermorelin, tesamorelin), or by hitting the ghrelin receptor, the "amplify" signal (ipamorelin, the GHRPs, hexarelin).

Field guide↗

The Metabolic & Weight Loss Category Is a Two-Class Market — and You Should Only Shop in One of Them

The most important fact about this category in September 2026 isn't which drug works best. It's that there are two separate markets wearing the same costume. On one side: prescription incretin drugs that have driven two decades of clinical trials, are now sitting at their cheapest self-pay prices in history, and are discussed in Facebook support groups so large they could fill stadiums.

Field guide↗

Cognitive & Nootropic Peptides: The Russian Pair Is Real; Everything Else Is a Frontier

Thirteen compounds are pretending to be one market. They aren't. This category is really two different things sharing shelf space: a handful of registered Russian medicines — Semax, Selank, Cerebrolysin, Cortexin, and sideways in, Noopept — that are sold outside Russia as gray-market "research chemicals," plus a frontier of speculative analogs and mechanisms with no human data at all.

Field guide↗

The Honest Buyer's Guide to Cosmetic Peptides

Nobody in the cosmetic peptide aisle is selling medicine — and that sentence, which the research files state flatly on every one of the 14 items, is the single most important thing to absorb before spending a cent. Everything here is a cosmetic ingredient.

Field guide↗

Immune & Antimicrobial Peptides: The Honest Buyer's Guide

Twelve immune and antimicrobial peptides walked into this review. Two of them — thymosin alpha-1 and LL-37 — have actual communities of people discussing actual use. Two more — thymalin and epithalon — are famous because of a single Instagram reel. One has real regulatory momentum and zero human trials. And five are genuine registered drugs in Russia that the entire English-speaking internet has somehow never heard of.

Field guide↗

The Longevity Peptide Shelf, Reviewed: One Real Drug, One Cheap Sleep Favorite, and a Russian Belief System

The longevity peptide aisle is the strangest corner of the peptide world. Thirteen items, all promising to slow or reverse some aspect of aging — telomeres, mitochondria, senescent cells, whole organ systems — but they live in three different realities. In one corner sits the only peptide in this category with an actual FDA-approved drug label: Forzinity, approved September 2025 for Barth syndrome, with real clinical trials and a documented mechanism.

From the community

The next story
could start with you.

A question worth investigating. A source we missed. A first-hand perspective. Help shape what we cover next.

01 / READER CONTRIBUTIONSShare a story or observation ↗02 / PEOPLE IN SCIENCENominate an interview guest ↗03 / BETTER EVIDENCESend a source or correction ↗

Every contribution goes through editorial review before publication.