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Insulin-like growth factor analogue

IGF-1 LR3

Long-acting IGF-1 analogue with reduced IGFBP binding. Widely sold by RUO suppliers.

Preclinical only · t½ ~20–30 h · 20–100 mcg/day (anecdotal)

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CPreclinical onlyPreclinicalInsulin-like growth factor analogue

Also: Long R3 IGF-1

Long-acting IGF-1 analogue with reduced IGFBP binding. Widely sold by RUO suppliers.

Scientific Consensus Engine

Evidence Intelligence Score™

Heuristic — no indexed evidence yet
3.6/ 10
Overall confidence
Insufficient
Outlook
Emerging
Evidence maturity
  1. Preclinical← current
  2. Pilot human
  3. RCT
  4. Multi-RCT
  5. Meta-analysis

Confidence aggregates eight dimensions of evidence — human data, safety maturity, mechanism, clinical readiness, momentum, consistency, long-term follow-up, and translational signal. It is a measure of what is known, not a recommendation. Methodology.

Eight-dimension breakdown
  1. Human evidence
    Weight of RCT and observational data
    3.8
  2. Safety maturity
    Follow-up depth and adverse-event signal
    2.1
  3. Mechanism confidence
    Pathway specificity and clarity
    5.9
  4. Clinical readiness
    Distance to physician-prescribable use
    2.8
  5. Research momentum
    Recency of indexed clinical evidence
    5.0
  6. Study consistency
    Effect direction across cohorts
    3.0
  7. Long-term data
    Follow-up beyond initial trial windows
    1.8
  8. Translational confidence
    Animal → human signal preservation
    4.3
Strongest supported claim

Mechanistic and preclinical evidence is suggestive; controlled human trials are not yet on the index.

Weakest / unclear

Translational confidence is limited until pre-registered human trials reproduce the preclinical signal.

Major unknowns

Interactions outside listed contraindications, long-term safety, and effect heterogeneity across age and sex are not fully resolved.

Scientific outlook

Outlook: speculative. A grade upgrade requires controlled human evidence, not additional preclinical confirmation.

Mechanism
IGF-1R agonist with extended half-life.
Citations
What we don't know yet
  • —Long-term safety beyond reported study durations.
  • —Effect size in populations under-represented in the cited trials.
  • —Interactions with concomitant medications outside listed contraindications.

We surface uncertainty next to every claim. Suggestive, never prescriptive — discuss with a clinician.

Editorial team
Independent · No affiliate revenue
Reviewed quarterly
Brands carrying this peptide

1 brand across three tiers.

Research-use only

1 brand

Sold by chemical suppliers labelled 'for laboratory research only — not for human consumption'. No pharmaceutical-grade QC, no medical oversight. Listed for transparency.