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Growth FactorMuscle
IGF-1 LR3
Long R3 Insulin-like Growth Factor
Typical Dose
20–80 mcg
Route
Injectable
Variants
1mg
Overview
What is IGF-1 LR3?
IGF-1 LR3 is a modified IGF-1 analog with a longer half-life and reduced binding to IGFBPs, supporting muscle hyperplasia and recovery research.
Mechanism of Action
Binds IGF-1R on muscle cells, activating PI3K/Akt/mTOR signaling for protein synthesis and satellite cell proliferation.
Key Benefits
- Muscle hypertrophy and hyperplasia
- Nutrient partitioning
- Recovery acceleration
Research Indications
Muscle growth researchMost Effective
RecoveryEffective
Fat partitioningModerate
Research Protocols
Disclaimer
These are commonly discussed research protocols and not medical advice. Consult a healthcare provider before use.
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| Conservative | 20 mcg | 1x daily | Subcutaneous near worked muscle |
| Standard starting dose | 40 mcg | 1x daily | Subcutaneous |
| Typical maintenance | 50 mcg | 1x daily 5/7 days | Subcutaneous |
| Maximum | 80 mcg | 1x daily | Subcutaneous |
Peptide Interactions
GH peptides
Insulin
Hypoglycemia risk
Side Effects & Safety
Common Side Effects
- Hypoglycemia
- Numbness
- Tissue hyperplasia (organ growth) at high doses
Safety Guidelines
- For laboratory research use only — not for human consumption
- Store reconstituted vials at 2–8°C, use within 30 days
- Rotate injection sites to avoid local irritation
- Discontinue and consult a clinician if adverse reactions occur
Quality Indicators
- ≥95% purity verified by HPLC
- Third-party tested for sterility
- Lyophilized in sealed multi-dose vial
- Bacteriostatic water reconstitution
- Refrigerated cold-chain shipping
What to Expect
- 1Week 1–2Pump and recovery feel
- 2Week 3–4Visible hyperplasia signals
- 3Week 5–8Sustained anabolic response
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