IGF-1 LR3
Insulin-Like Growth Factor-1 Long R3
A synthetic analog of IGF-1 with extended half-life and enhanced potency. Promotes muscle growth, recovery, and tissue repair.
Typical Cost
$80-200/vial (1mg)
Status
Research
Peptide Profile
IGF-1 LR3
Mechanism of Action
Binds to IGF-1 receptors with higher affinity and longer duration than natural IGF-1. Stimulates muscle cell proliferation (hyperplasia) and growth (hypertrophy). Enhances nutrient uptake into muscle cells.
Common Dosages
subcutaneous
20-100mcg
Daily or post-workout · 4-6 weeks
Benefits
Significant muscle growth
Enhanced recovery
Improved nutrient partitioning
Reduced body fat
Better pumps
Side Effects
Hypoglycemia
Water retention
Joint pain
Organ growth concerns
Cancer risk (theoretical)
HGH gut
Key Research
IGF-1 LR3 muscle effects
Demonstrated potent anabolic effects in muscle tissue in animal studies
Regulatory Status
Research chemical only. Not FDA-approved. Banned by most sports organizations.
Contraindications
- ⚠Active cancer
- ⚠Diabetes
- ⚠Pregnancy/breastfeeding
- ⚠Organ disease
Significant risks make this unsuitable for most GLP-1 users. SeraVia Muscle+ Protect offers safer support.
Learn More →Find peptide providers
Search 18,000+ clinics offering peptide therapy alongside GLP-1 medications.
Search Providers →Disclaimer: This information is for educational and research purposes only. Peptides described here may not be FDA-approved for human use. Always consult a qualified healthcare provider before using any peptide product. GLP1Search does not sell peptides.