IGF-1LR3 1mg (Bacteriostatic water not included)

Peptide Dosage Calculator (Reconstitution)

💉 IGF-1 LR3 (1 mg)

IGF-1 LR3 (Long R3 Insulin-Like Growth Factor-1) is a synthetic, long-acting analog of IGF-1. It is designed to have a much longer half-life than natural IGF-1 and stronger activity at IGF receptors.

It is not FDA-approved for general use and is typically sold as a research compound.

🔬 How It Works

IGF-1 LR3:

• Mimics insulin-like growth factor-1

• Binds to IGF-1 receptors in muscle and other tissues

• Stimulates cell growth and proliferation

• Increases nutrient uptake into muscle cells

• Has reduced binding to IGF binding proteins (which extends activity)

Unlike growth hormone (GH), which stimulates your body to produce IGF-1, IGF-1 LR3 acts directly at the receptor level.

📦 What “1 mg” Means

A 1 mg vial refers to the total peptide amount in the vial.

Because IGF-1 LR3 is extremely potent, dosing is typically measured in micrograms (mcg), not milligrams. Even small dosing differences can significantly affect blood glucose and tissue response.

🏋️ Why People Discuss It in Performance Circles

Commonly talked about for:

• Muscle hypertrophy

• Increased nutrient partitioning

• Fat loss support

• Local muscle growth (when injected intramuscularly)

However, outcomes vary significantly and carry meaningful risks.

⚠️ Major Risks & Concerns

IGF-1 LR3 is much more aggressive than GH secretagogues like:

• Ipamorelin

Key risks include:

• Hypoglycemia (low blood sugar)

• Organ enlargement with long-term use

• Potential tumor growth acceleration (IGF pathway strongly influences cell proliferation)

• Insulin resistance

• Edema / water retention

Because it directly stimulates growth pathways, it carries more systemic risk than milder peptides.

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