Peptide library / Bones & muscles / IGF-1 DES
IGF-1 DES
A shortened form of IGF-1 used in labs, sold for local muscle growth.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Cell growth in cultureLab
- Muscle growth, promotedLab
How it is thought to work
Removing three amino acids stops IGF-1's binding proteins from holding it back, so it acts strongly but briefly.
What the evidence shows
No human therapeutic studies.
Safety and unknowns
Low blood sugar and theoretical tumor promotion. Banned in sport.
Regulatory status
Not approved for human use.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.