Plain English · Primary sources · Sells nothing
Everything worth knowing about peptides.
We read the studies and translate what they actually found. Every claim tied to a primary source, every page grading its own evidence, and nothing for sale — including the research peptides the big health sites won't touch.
- 15,552clinical trials tracked
- 117peptides
- 41amino acids
- 19FDA approvals
- 108compounds, IDs verified
- 1,406studies recruiting now
- Updated Jul 20, 2026
More than a reference
A live desk, not a static page
Three trackers refresh every time the site rebuilds, so the numbers are the real ones the day you read them — not a figure someone typed into a blog post once and forgot to update.
Clinical trials
15,552 studies across 78 compounds
Who is testing what, right now — total, recruiting, active and completed counts per compound, straight from ClinicalTrials.gov.
Open the tracker →Regulatory watch
19 approved · 89 research-only
FDA status for every compound, dated and honest — what is approved, what is investigational, and what is sold "for research use only."
Open the tracker →The evidence
108 compounds, one filterable table
Sort the whole catalog by evidence tier, category, legal status or trial count. Every row is a page; every page grades its own proof.
Open the tracker →
01 Start here
New to peptides? Read these first
Read these and the rest of the site makes sense — what peptides are, how the science works, and how to weigh the evidence.See all explainers →
Explainer
What are peptides? A plain-English primerA peptide is a short chain of amino acids that carries a message. What peptides are, how they differ from proteins, and why they became a real drug class.
Explainer
How GLP-1 drugs work (Ozempic, Wegovy, Mounjaro)GLP-1 drugs copy a gut hormone that tells your brain you're full and slows your stomach. Here's how Ozempic, Wegovy, and Mounjaro work, in plain English.
Explainer
How to reconstitute a peptide: powder to syringeReconstituting a peptide means adding the right sterile diluent to the powder, letting it dissolve without shaking, then doing the dose math before you draw.
Explainer
How to read peptide evidence (without a science degree)Tell a human trial from a mouse study from a Reddit anecdote. The one skill for judging any peptide claim: the evidence ladder, in plain English.
02 The reference
Browse by category
Eight families, grouped the way people actually think about them — from the metabolic drugs everyone's heard of to the mental-health peptides nobody else will cover.
03 Built to be used
Tools that do the arithmetic
The math people usually do wrong on the back of a napkin — reconstitution, cost per dose, half-life, what combines and what doesn't — done properly, with every assumption shown.
Tool
Reconstitution calculatorTurn mg, mL and target dose into exact syringe units.
Tool
Cost-per-dose calculatorWhat a vial actually costs you per injection.
Tool
Half-life visualizerSee how a compound builds up and clears over time.
Tool
Mixing compatibilityWhat people combine in one syringe — and what they shouldn’t.
04 Why trust a page here
No vials to sell you
117 peptides · 41 amino acids ·6 stacks · 107 glossary terms — every page tied to primary sources, and nothing in a cart.
Primary-source cited
Every claim links to PubMed, ClinicalTrials.gov, or the FDA label itself — never a blog, never a vendor. See how we grade evidence →
Plain English, graded honestly
Dense studies rewritten for a smart non-scientist — with each finding marked human, animal, lab-dish, or anecdote, so you can see how solid it really is.
We sell nothing
No vendors, no affiliate links, no sponsored posts — so there's no reason to oversell you. Read our independence page →
05 Directory
Everything else, by name
Every other way into the reference — amino acids, stacks, comparisons, and the full A–Z.
- Amino acids
The protein building blocks, plus creatine, carnitine and more.
- Stacks
Common peptide combinations and why people run them.
- Compare
Two compounds side by side — no universal winner crowned.
- Learn
Plain-English explainers on how peptides actually work.
- Glossary
Peptide and pharmacology terms, defined simply.
- A–Z index
Every page on the site, listed alphabetically.