IGF-1 LR3 Protocol
Dosing & Research
Last Updated: September 4, 2026
Cell growth and hypertrophy models, Reduced IGFBP-binding studies, Muscle anabolism, Recovery protocols
Half-Life
~20-30 hours
Administration
Subcutaneous
Frequency
Once Daily, Morning Or 15 Min Before Workout
How It Works
- Cell growth and hypertrophy models
- Reduced IGFBP-binding studies
- Muscle anabolism
- Recovery protocols
Dosing Structure
Dose
20–100mcg (start low, escalate based on response)
Frequency
Once Daily, Morning Or 15 Min Before Workout
Notes
Beginner: 20mcg taken daily in the morning or 15 minutes before workout. Intermediate: 50mcg taken daily in the morning or 15 minutes before workout. Advanced: 50–100mcg taken daily in the morning or 15 minutes before workout. IGF-1 LR3 has a significantly longer active window (~20-30 hours) compared to native IGF-1; start at the lowest effective dose and escalate cautiously. IGF-1 LR3 is a very potent peptide and should be used with the utmost caution. Inject: Lower abdomen, outer thigh, upper arm (rotate daily). Within 15-30 min post-workout with carbs. Break: 4-6+ weeks.
Example Protocols
Dose: 20–100mcg (start low, escalate based on response)
Frequency: Once Daily, Morning Or 15 Min Before Workout
Duration: 4-6 weeks maximum; equal break recommended
Off Period: Not listed
Find Research Grade IGF-1 LR3
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Vendor One Research Labs
COA VerifiedThird-party COA-verified research peptides with published batch testing.
Source Coming SoonVendor Two Sciences
Purity TestedUS-based research compound supplier with independent purity testing.
Source Coming SoonVendor Three Peptide Co.
Bulk research peptide sourcing with batch-level documentation.
Source Coming SoonProtocol Notes
•
Beginner: 20mcg taken daily in the morning or 15 minutes before workout.
•
Intermediate: 50mcg taken daily in the morning or 15 minutes before workout.
•
Advanced: 50–100mcg taken daily in the morning or 15 minutes before workout.
•
IGF-1 LR3 has a significantly longer active window (~20-30 hours) compared to native IGF-1; start at the lowest effective dose and escalate cautiously.
•
IGF-1 LR3 is a very potent peptide and should be used with the utmost caution.
•
Inject: Lower abdomen, outer thigh, upper arm (rotate daily).
•
Within 15-30 min post-workout with carbs.
•
Break: 4-6+ weeks.
Research & Studies
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