Goals
What are you trying to fix?
Most searches that land here start with a goal, not a molecule — traffic arrives on “peptides for X,” not a brand query. Pick the outcome below and see every compound with human evidence behind it, ranked against that one outcome and nothing else.
6
22
The goals
Weight loss
Compare approved and investigational weight-loss peptides, their trial results and limitations, including what happens when treatment stops.
Strongest evidence
Evidence strength: Randomized trials
8 compounds compared
Weight-loss plateau
The weight curve flattening is a trial finding, not a failure. What STEP 5, SURMOUNT-4, STEP UP and SURMOUNT-5 measured about what happens next.
Strongest evidence
Evidence strength: Randomized trials
5 compounds compared
Muscle loss on a GLP-1
About a quarter of the weight lost on an incretin drug is lean mass. Here is what the trials measured, and which compounds have evidence for holding onto it.
Strongest evidence
Evidence strength: Randomized trials
6 compounds compared
Visceral fat
One peptide is FDA-approved specifically to reduce visceral fat — in one narrow population. Here is what it did, and what the GLP-1 drugs did alongside it.
Strongest evidence
Evidence strength: Randomized trials
6 compounds compared
Injury recovery
BPC-157, TB-500, GHK-Cu: the animal data is genuinely good and the human data barely exists. What is registered, what has reported, and what has not.
Strongest evidence
Evidence strength: Early human
5 compounds compared
Sleep
One peptide has a randomized sleep-outcome trial behind it, and it is not one of the peptides sold for sleep. What the trials measured, and what they did not.
Strongest evidence
Evidence strength: Randomized trials
5 compounds compared
Already know which compound you’re researching?
The peptide index goes deep on one molecule at a time instead — what it is, how it’s supposed to work, and what has actually been tested.
How a compound is graded, and what moves it between evidence tiers, is on our methodology page.
Medical disclaimer: This content is for general educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a licensed healthcare professional before starting, stopping, or changing any treatment.