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PeptiBrief
Research peptide

IGF-1 LR3

IGF-1 LR3 is a research peptide indexed in the PeptiBrief evidence database.

Evidence confidence

Human
Not yet assessed
Trust Engine review pending.
Animal
2/5
Some animal evidence
1 citation
Mechanistic
Not yet assessed
Trust Engine review pending — see editorial links below.
Editorial evidence links exist, but this category has not yet completed Trust Engine assessment.
Safety
Not yet assessed
Trust Engine review pending.

Claimed uses

Mechanisms

Safety notes

Long-term safety, validated dosing and product quality may be uncertain outside formal clinical development.

Regulation
  • Never approved for human therapeutic use and prohibited in sport. Black-market or research-labelled products are not authorised medicines.
  • Not approved for general wellness or performance use unless a specific regulated product and indication exists.

References

  1. Detection of LongR3-IGF-I, Des(1-3)-IGF-I and R3-IGF-I in blood and urine · 2021
Last reviewed
12 July 2026
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