6
User score
Mostly negative0% positive0% mixed33% negative67% unclear
Of reports that state an outcome, 0% are positive.
Clinical research
Research pending
High-risk compound. Peptides are not approved as supplements, carry serious and sometimes irreversible risks, are banned in competitive sport and may be restricted where you live. Nothing here is a recommendation to use it.
What IGF-1 does, according to users
Of the people who reported each effect, the share who said it got better.
No specific effects reported yet.
betterno changeworse
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
Research data for IGF-1 is being compiled.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
No doses stated in the reports so far.
Reported side effects
How often each side effect came up across all reports.
extreme itching ×1
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“What role if any do IGF-1, GHRH and GHRP play in all this?”
“Please don’t listen to the people saying igf-1”
“I initially thought was caused by either the GHK-Cu or the IGF. I became extremely itchy all over my body”
More peptides
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PT-141
Peptide · 39 reports
96% report better libido
Mostly positiveCResearch: Limited
Klow
Peptide · 32 reports
100% report better skin & hair
Mostly positiveDResearch: None
GHK-Cu
Peptide · 219 reports
94% report better skin & hair
Mostly positiveCResearch: Limited
TB-500
Peptide · 175 reports
97% report better recovery
Mostly positiveCResearch: Limited
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate