Peptides, explained honestly.
What each peptide is, what the research actually shows, and how strong that evidence is. Organized by your goal, in plain language.
Photo: Centre for Ageing Better / Unsplash
Start with your goal
All goal guides →
Weight & metabolism
Appetite, blood sugar, and body weight
7 peptides, ranked by evidence
Recovery & repair
Tendons, muscle, and tissue
3 peptides, ranked by evidence
Muscle & body composition
Lean mass and body fat
4 peptides, ranked by evidence
Sleep
Sleep quality and recovery overnight
4 peptides, ranked by evidence
Skin & hair
Skin quality and appearance
1 peptide, ranked by evidence
Longevity
Aging, energy, and healthspan
5 peptides, ranked by evidence
Cognition & mood
Focus, stress, and mental clarity
2 peptides, ranked by evidence
Sexual wellness
Desire and hormone signaling
2 peptides, ranked by evidenceFind your starting point
You'll get the peptides researched for your goal, ranked by evidence, plus the foundations that matter first.
Latest reading
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From the library
All 19 peptides →Semaglutide
A GLP-1 receptor agonist and one of the most studied peptide medicines in the world.
FDA-approved drugDual GIP / GLP-1 receptor agonistTirzepatide
The first approved medicine that activates both the GIP and GLP-1 receptors.
FDA-approved drugSynthetic gastric peptideBPC-157
One of the most discussed peptides for recovery, with mostly animal research behind it.
Mostly animal researchCopper-binding tripeptideGHK-Cu
A naturally occurring copper peptide, widely used in topical skincare.
Early human researchGHRH analogTesamorelin
A growth-hormone-releasing hormone analog with a narrow FDA approval.
FDA-approved drugMitochondrial-derived peptideMOTS-c
A peptide encoded in mitochondrial DNA, studied for its role in metabolism.
Mostly animal researchHow we write about peptides
Evidence first
Every entry is graded from "FDA-approved drug" down to "mostly animal research," so hype never passes for proof.
No dosing
We explain the science. Amounts, schedules, and decisions belong with a licensed provider.
Sources you can check
Every peptide page links straight to the research on PubMed so you can read it yourself.