IGF-1 LR3
Long R3 Insulin-like Growth Factor-1
IGF-1 LR3 is a synthetic analog of human insulin-like growth factor 1, engineered with an arginine substitution at position 3 and 13 additional amino acids at the N-terminus. This 83-amino acid peptide exhibits reduced affinity for IGF-binding proteins, resulting in a prolonged half-life of 20-30 hours and approximately 3 times greater potency than native IGF-1. Currently investigational and not FDA-approved for human use.
Complete Dosing Guide
Who Should Not Take IGF-1 LR3 & Safety Tips
Do Not Use If:
- You have active cancer or tumor history (IGF-1 promotes cell growth and proliferation).
- You're pregnant or breastfeeding.
- You have untreated diabetes or severe insulin resistance.
- You have a history of hypoglycemia or blood sugar disorders.
- You're under 18 years of age (growth plates may be affected).
Use Carefully If:
- You have any metabolic disorders.
- You're taking medications that affect blood sugar levels.
- You have cardiovascular conditions (prolonged use may affect heart tissue).
- You have a family history of acromegaly or gigantism.
- You're using other peptides or growth hormone compounds.
Important Warnings:
- Prolonged use may cause acromegalic cardiomyopathy (heart enlargement).
- Excessive doses can cause organ and intestinal growth (distended abdomen).
- May accelerate existing tumor growth (contraindicated with cancer).
- Can cause insulin resistance with prolonged high-dose use.
Medical Disclaimer
IGF-1 LR3 is an investigational research compound not approved by the FDA for human therapeutic use. This information is provided for educational purposes only and should not be construed as medical advice. IGF-1 LR3 carries significant risks including severe hypoglycemia and potential tumor growth acceleration. Any use should only occur under strict medical supervision in approved research settings. Individuals with cancer history, diabetes, or other serious medical conditions should not use this compound.