IGF-1 LR3 300mcg
Insulin-like Growth Factor — muscle growth & cellular repair
IGF-1 LR3 (Insulin-Like Growth Factor-1 Long R3) is a recombinant analogue of IGF-1 with an extended 13-amino-acid N-terminal peptide and an amino acid substitution (Arg→Gly3) that dramatically reduces its binding to IGF-1 binding proteins (IGFBPs). This increases its circulating half-life from ~15 minutes to ~20–30 hours, making it far more potent and longer-lasting than native IGF-1.
Clinical Uses
What conditions & goals this peptide addresses
Key Benefits
The measurable outcomes you can expect
How It Works — Mechanism of Action
The precise biology behind this peptide's effects
IGF-1 LR3 binds to IGF-1 receptors on muscle cells, triggering PI3K/Akt/mTOR signalling — the master anabolic pathway. It stimulates muscle cell hyperplasia (new cell creation) in addition to hypertrophy (existing cell enlargement), a property not shared by testosterone or synthetic anabolics. It also activates satellite cells, promoting muscle repair and new fibre formation.
Subcutaneous injection post-workout for maximum muscle cell nutrient uptake. Can also inject intramuscularly into the trained muscle group. Use insulin syringe. Take on workout days only.
Dosage Protocol
GHH physician-guided dosing guidelines
20–100 mcg post-workout subcutaneous. Beginners: 20–40 mcg. Advanced: 60–100 mcg. Maximum 4–6 weeks per cycle — receptor downregulation occurs with longer use.
When to Expect Results
A realistic timeline from first dose to full effect
Muscle fullness and recovery: within first week. Hyperplasia effects: 3–4 weeks. Full body composition results: 4–6 weeks.
Side Effects
What to watch for and how common they are
Hypoglycemia (low blood sugar) if used without food post-workout. Jaw pain, joint discomfort from swelling. Acromegaly risk at excessive doses (facial/hand growth). Nerve entrapment.
Contraindications
Who should not use this peptide
Active cancer (potent mitogen — absolute contraindication). Hypoglycemia tendency. Pregnancy. Diabetics (monitor glucose carefully).
Best Stacked With
Peptide synergies recommended by GHH physicians
Understanding Your Body's Language
Peptides are not exotic foreign chemicals — they are the precise molecular signals your body has evolved to use for billions of years. Here's what you need to know.
"Peptides don't change who you are — they restore who you were designed to be."
— German Health Hub Clinical Philosophy
All peptides require UAE licensed physician review and mandatory blood work before dispensing. Information presented is for educational purposes only and does not constitute medical advice. Individual results may vary. Peptides are prescribed and dispensed under strict medical supervision by German Health Hub's licensed clinical team.