Recovery & Repair · Recovery & Repair peptide (research)
IGF-1 LR3
- Drug class
- Recovery & Repair peptide (research)
- Status
- Compounded (503A)
- Also known as
- igf1 lr3, long r3 igf-1, igf-1, insulin like growth factor
- Reviewed
- 2026-06-01 · Kindr Health Clinical Team
What IGF-1 LR3 is studied for
- Muscle protein synthesis (research)
- Tissue repair (research)
- Extended half-life (research)
Mechanism of action
IGF-1 LR3 is being studied in the recovery & repair category. Long Arg3 IGF-1 analog studied for muscle growth and tissue repair. Mechanism of action varies by study model; refer to the kindr clinical library for a deeper writeup.
Frequently asked questions
What is IGF-1 LR3?
IGF-1 LR3 is a recovery & repair peptide. Long Arg3 IGF-1 analog studied for muscle growth and tissue repair.
What is IGF-1 LR3 studied for?
Published research has examined IGF-1 LR3 for muscle protein synthesis, tissue repair, extended half-life. Human clinical evidence varies by indication.
Is IGF-1 LR3 FDA-approved?
No. IGF-1 LR3 is not FDA-approved for the indications listed. It is available compounded by 503A pharmacies under clinician supervision, or for international research use only on this catalog.
How is IGF-1 LR3 used in research?
Protocols vary by study. IGF-1 LR3 is typically administered subcutaneously in research settings. No validated human therapeutic dose exists outside FDA-approved indications.
What are the known risks?
Long-term human safety data for IGF-1 LR3 is limited. Theoretical risks vary by mechanism. Any human use should be supervised by a licensed clinician.
Build the IGF-1 LR3 protocol stack
Research protocols commonly pair IGF-1 LR3 with the peptides below. Add all three vials to unlock the bundle discount at checkout.
Related peptides in Recovery & Repair
Continue across the Kindr entity graph
Related evidence, peptides, and clinical tools on the same topic.
- BPC-157 — tissue repair peptidePeptide
- TB-500 — recovery & repairPeptide
- GHK-Cu — regenerative copper peptidePeptide
- Slow wound healing in menopauseTissue Clock
- Tissue Clock — quantify your repair rateTissue Clock