What is IGF-1 LR3?

The short answer

IGF-1 LR3 is a protein.

What it is
IGF-1 LR3: Modified IGF-1 analog (protein).
What people look into
Muscle and exercise

4 sources
Status as of October 4, 2026
How we source
Ellum doesn't sell peptides.

By Ellum EditorialUpdated October 7, 2026AI use

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Peptides: IGF-1 LR3 (1 selected) · edit

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What it is

Also known as: long r3 igf-1

Regulatory status

Not FDA-approved How we label status

As of October 4, 2026, IGF-1 LR3 is not FDA-approved for any use and is not on FDA's 503A bulks list.

See IGF-1 LR3 in the Index →

Federal (FDA): Not FDA-approved
503A compounding: No category; not on 216.23 as of 2026-10-07; not an approved-drug component (as of October 7, 2026)
WADA 2026: S2.3

References

Sources as of October 4, 2026