peptide
IGF-1 LR3
emergingResearch Use OnlyInjection
Modified IGF-1 with extended half-life. Can create new muscle cells (not just enlarge existing ones), making it one of the most potent muscle-building peptides.
Key facts
- Classification
- Peptide — Long-lasting IGF-1 that drives muscle growth and cell proliferation. Limited human data.
- Primary benefits
- Muscle Growth (8/10) · Injury Healing (5/10) · Fat Loss (4/10)
- Administration
- Injection
- Doses studied
- 20-50 mcg subq daily, after a workout or split between morning and evening. Cycle for 4-6 weeks max.
- Evidence strength
- Emerging — 20 peer-reviewed studies
- Stacks well with
- CJC-1295 with DAC, MK-677
- Legal status
- Research Use Only · not prescribable in US · WADA prohibited
Quick stats
- Type
- Peptide
- Administration
- Injection
- Studies referenced
- 20
- Stacks with
- 2 peptides
- Regulatory
- Research Use Only
Goal coverage · IGF-1 LR3
💪 Muscle Growth8/10
🩹 Injury Healing5/10
🔥 Fat Loss4/10
Medical oversight requiredNot safe during pregnancy· 4 contraindications