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IGF-1 LR3

Long-Range Insulin-Like Growth Factor-1

Long-acting IGF-1 analog. Direct anabolic signaling.

Anabolic researchTissue research
Best Price
at LA Peptides
$51.55
$51.55/mg · 1mg
Buy at LA Peptides
/ research index

The research base

Research Maturity
★★★★
4/5 — Volume of studies
Evidence Strength
★★★★
4/5 — Quality of evidence

Extensively studied. Direct receptor activation downstream of GH.

/ mechanism of action

How it works

IGF-1 receptor agonist. Direct anabolic and proliferative signaling.

/ research dosing

Common research protocols

Range
20-50 mcg/day (research range; can go up to 100mcg)
Frequency
Once daily, AM
Route
Subcutaneous
Cycle
4 weeks on, 4+ weeks off (max 6 weeks continuous)
Research notes

Very potent IGF-1 analog with longer half-life (LR3 = Long R3). Risk of hypoglycemia — monitor blood sugar. Watch for tissue hyperplasia at high doses. Short cycles only. Should not be combined with insulin or other hypoglycemic agents.

FOR RESEARCH USE ONLY. Doses listed are compiled from published research literature, FDA-approved drug labels, and well-documented research community practice. Not medical advice.
/ standalone use

As a solo compound

Powerful standalone. Direct receptor activation.

/ side effects

What to know

Hypoglycemia possible. Generally well-tolerated at research doses.

/ timeline

Realistic expectations

1-2 weeks

/ recommendation

Where to buy IGF-1 LR3

🏆Our pick for IGF-1 LR3
Valor Peptides
1mg · USA · Card / Crypto
  • Third-party tested (Janoshik)
  • COAs provided — Comprehensive
  • Highest verification tier in stock
  • 4.8★ community rating
Also solid
Peptidology
1mg · $93.33/mg
$93.33
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Ascension Peptides
1mg · $63.96/mg
$63.96
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Peppy
1mg · $56.67/mg
$56.67
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/ all listings

Full index, price per mg

LA PeptidesBEST
4.6
Size
1mg
Price
$51.55
$/mg
$51.55
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Peppy
4.7
Size
1mg
Price
$56.67
$/mg
$56.67
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Purus Peptides
4.7
Size
1mg
Price
$58.55
$/mg
$58.55
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Molecular Solutions
4.7
Size
1mg
Price
$58.90
$/mg
$58.90
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Omegamino
4.5
Size
1mg
Price
$60.46
$/mg
$60.46
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Biocase Innovations
4.6
Size
1mg
Price
$63.04
$/mg
$63.04
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Southern Aminos
4.6
Size
1mg
Price
$63.29
$/mg
$63.29
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Ascension Peptides
4.8
Size
1mg
Price
$63.96
$/mg
$63.96
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Throne
4.7
Size
1mg
Price
$66.98
$/mg
$66.98
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Renova Peptides
4.6
Size
1mg
Price
$66.99
$/mg
$66.99
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Ion Peptide
4.6
Size
1mg
Price
$67.55
$/mg
$67.55
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EZ Peptides
4.7
Size
1mg
Price
$67.72
$/mg
$67.72
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Glow Aminos
4.5
Size
1mg
Price
$69.18
$/mg
$69.18
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RefillPen
4.5
Size
1mg
Price
$71.45
$/mg
$71.45
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Felix Chemical Supply
4.5
Size
1mg
Price
$77.26
$/mg
$77.26
Out of stock
FITSKNS
4.6
Size
1mg
Price
$85.39
$/mg
$85.39
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Solyn Peptides
4.5
Size
1mg
Price
$88.70
$/mg
$88.70
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Peptira
4.6
Size
1mg
Price
$89.95
$/mg
$89.95
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Nano Blue Labs
4.6
Size
1mg
Price
$90.00
$/mg
$90.00
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Good Labs
4.7
Size
1mg
Price
$90.52
$/mg
$90.52
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AMC Essentials
4.6
Size
1mg
Price
$91.24
$/mg
$91.24
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Valor Peptides
4.8
Size
1mg
Price
$92.89
$/mg
$92.89
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Welli Labs
4.6
Size
1mg
Price
$93.29
$/mg
$93.29
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Peptidology
4.8
Size
1mg
Price
$93.33
$/mg
$93.33
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Double R Labs
4.7
Size
1mg
Price
$94.60
$/mg
$94.60
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RetaOneLabs
4.7
Size
1mg
Price
$97.64
$/mg
$97.64
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Modified Aminos
4.5
Size
1mg
Price
$102.05
$/mg
$102.05
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Modern Research Peptides
4.8
Size
1mg
Price
$104.78
$/mg
$104.78
Out of stock
MDPackUSA
4.5
Size
1mg
Price
$105.67
$/mg
$105.67
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Solution Peptides
4.6
Size
1mg
Price
$107.54
$/mg
$107.54
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One Day Compounds
4.6
Size
1mg
Price
$109.80
$/mg
$109.80
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FOR RESEARCH USE ONLY. IGF-1 LR3 is intended for laboratory research and not for human consumption.