Your goal
Losing fat
Fat loss is the rare area where the science is genuinely strong — but almost all of it comes from one family of drugs: the GLP-1 injections like Ozempic and Wegovy. These are real, prescription medicines that produce major, proven weight loss under a doctor's care. Nearly everything else sold online as a "fat-loss peptide" is hype with little or no human proof behind it.
What actually works
3The strongest real evidence for this goal.
Tirzepatide
ProvenThe approved weekly weight-loss shot (Zepbound) with the biggest, most reliable fat loss of any drug you can actually get prescribed today.
Semaglutide
ProvenThe famous one (Wegovy, Ozempic) — approved for weight loss and backed by some of the largest human trials ever run on the subject.
Liraglutide
ProvenAn older approved daily shot (Saxenda) that reliably takes weight off, just less than the newer once-weekly drugs.
Promising, still unproven
4Interesting early signals — not proven yet.
Retatrutide
ModerateProduced the biggest weight loss ever recorded for a drug in real human trials, but it's still in final testing and not approved anywhere yet.
Orforglipron
ModerateA once-daily pill (no needle) with strong late-stage trial results, likely approved soon but not available yet.
Cagrilintide
ModerateCopies an "I'm full" hormone and drives real weight loss in trials, especially paired with semaglutide, but it's still experimental.
Mazdutide
ModerateA dual-hormone shot with strong trials, recently approved for weight loss in China but not yet available in the West.
Mostly hype — be skeptical
6Lots of buzz, little human proof. Tread carefully.
AOD-9604
EarlyA growth-hormone fragment sold everywhere as a fat burner, but its human obesity trial showed essentially no meaningful weight loss.
HGH Fragment 176-191
EarlyThe same growth-hormone fragment marketed as a targeted fat-melter, with no solid human evidence that it works.
5-Amino-1MQ
EarlyA trendy fat-loss capsule tested only in mice and lab dishes, never once in a human.
MOTS-c
EarlySold as "exercise in a shot," but the fat-loss evidence is entirely from animals so far.
Adipotide
EarlyDesigned to starve fat tissue of its blood supply, but only ever tested in monkeys and mice.
SLU-PP-332
EarlyAn "exercise mimetic" that exists only in mouse studies and lab cells, never a living person.
The honest bottom line
If you want fat loss that's actually proven, it's the GLP-1 family (semaglutide, tirzepatide) prescribed by a doctor — the injectable "fat-burner peptides" sold online mostly don't work.
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