Source comparison
How to Run IGF-1 LR3 Cycle: Dosing vs Receptor Sensitivity Comparison
The table below compares different IGF-1 LR3 cycle structures based on dosing frequency, cycle duration, and receptor sensitivity outcomes: Conservative Split-Dose 40–60 mcg Twice daily (AM + post-training) 4 weeks Low. Split dosing prevents sustained receptor
This comparison does not assign a generated winner or score.
- The table below compares different IGF-1 LR3 cycle structures based on dosing frequency, cycle duration, and receptor sensitivity outcomes:
- Conservative Split-Dose
- 40–60 mcg
- Twice daily (AM + post-training)
- 4 weeks
- Low. Split dosing prevents sustained receptor saturation
- Recommended for first-time users; balances anabolic signaling with receptor preservation
- Standard Split-Dose
- 60–80 mcg
- 4–6 weeks
- 6 weeks
- Moderate. Higher dose increases cumulative receptor occupancy
- Suitable for experienced users; requires strict off-period discipline
- Single Daily Dose
- Once daily (post-training)
- Moderate-High. Continuous high-level receptor binding accelerates desensitization
- Not recommended; single bolus creates prolonged receptor saturation
- Extended Continuous
- Twice daily
- 8+ weeks
- Variable or none
- Very High. Receptor density significantly reduced by week 6–8 regardless of dose adjustments
- Hard reject; diminishing returns after 6 weeks make extended cycles counterproductive
- Pulse Dosing (training days only)
- Training days only (4–5×/week)
- Low-Moderate. Intermittent exposure theoretically reduces cumulative receptor load
- Mixed evidence; 20–30 hour half-life means significant overlap between doses