Elamipretide
SS-31 · MTP-131 · Bendavia · Forzinity
Approved for an ultra-rare mitochondrial disease. Sold in the longevity market for something considerably broader.
Studied for muscle growth
29
Registered trials
Ibutamoren
MK-677 · MK-0677 · LUM-201 · Nutrobal
A growth-hormone secretagogue, widely mislabelled as a SARM. Studied mostly for growth hormone deficiency rather than the uses it is sold for.
Studied for muscle growth
13
Registered trials
ACE-031
Ramatercept · ActRIIB-IgG1
A myostatin-pathway fusion protein whose clinical development stopped. Still sold as a muscle-building peptide.
Studied for muscle growth
4
Registered trials
Ipamorelin
Growth hormone secretagogue
Both completed human trials studied bowel movement after surgery. Neither studied muscle, fat, or aging.
Trials, but not for muscle growth
2
Registered trials
CJC-1295
Modified GRF (1-29) · DAC:GRF
One human trial ever registered, and it was stopped early. The registry does not say why.
Trials, but not for muscle growth
1
Registered trials
PEG-MGF
Mechano Growth Factor · IGF-1Ec · MGF
A pegylated fragment of an IGF-1 splice variant. Zero registered human trials — every trial a naive search returns is a different molecule.
No registered trial
0
Registered trials
IGF-1 LR3
Long R3 IGF-1 · LongR3
A modified IGF-1 analogue developed as a cell-culture reagent, not a medicine. Zero registered human trials of the analogue itself.
No registered trial
0
Registered trials
Sermorelin
GHRH (1-29)
Real research history, mostly in liver and metabolic disease. The anti-aging positioning is a marketing layer on top of that.
No registered trial
0
Registered trials
5-Amino-1MQ
NNMT inhibitor
An NNMT inhibitor, not a peptide. Widely sold for fat loss and longevity; zero registered human trials.
No registered trial
0
Registered trials
GHRP-2
Growth Hormone Releasing Peptide-2 · Pralmorelin
Sold alongside GHRP-6 in nearly identical stacks. Zero registered human trials.
No registered trial
0
Registered trials
GHRP-6
Growth Hormone Releasing Peptide-6
A staple of growth-hormone peptide stacks sold online. Zero registered human trials.
No registered trial
0
Registered trials
Hexarelin
Examorelin
A ghrelin-receptor agonist sold for muscle growth and anti-aging. Zero registered human trials.
No registered trial
0
Registered trials
—Read this
Marketed for is not tested for
A compound can be sold for muscle growth and studied for something else entirely — that is the most common pattern on this site, not the exception. A row saying "trials, but not for muscle growth" means registered studies exist and none of them asked this question. It is not a claim that the compound does nothing.