IGF-1 LR3

Description

IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a synthetic analog of IGF-1, a hormone that plays a central role in cell growth, muscle development, and tissue repair.

• Engineered version of natural insulin-like growth factor-1 (IGF-1)
• Modified to be more potent and longer-lasting
• Acts directly on tissues (unlike GH peptides, which act indirectly)
• Not approved by the U.S. Food and Drug Administration for general medical use

👉 In simple terms:
IGF-1 LR3 is a direct growth signal that tells cells to grow, repair, and multiply.

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Features

1. Direct Anabolic Activity (Core Feature)

• Binds to IGF-1 receptors on muscle and other tissues
• Directly stimulates:
  • Cell proliferation
  • Protein synthesis
  • Muscle growth

👉 Unlike peptides like CJC-1295 or Ipamorelin, it does NOT rely on GH release.

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2. Extended Half-Life

• Much longer-lasting than natural IGF-1
• Reduced binding to IGF-binding proteins (IGFBPs)

👉 Result:

• Prolonged activity (20–30 hours vs minutes for native IGF-1)

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3. Increased Potency

• Structural modifications increase:
  • Receptor affinity
  • Bioavailability

👉 Leads to stronger anabolic signaling per dose.

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4. Systemic Effects

IGF-1 LR3 acts throughout the body:

• ↑ Muscle growth (hyperplasia + hypertrophy)
• ↑ Recovery and tissue repair
• ↑ Nutrient partitioning (directing nutrients to muscle)
• ↑ Cell regeneration

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5. Reduced IGFBP Binding

• Less interaction with IGF-binding proteins
• More “free” IGF-1 available to act on tissues