Peptide ScheduleBest Peptides for Muscle Growth
The most effective peptides for building lean muscle mass — growth hormone secretagogues, IGF-1, and recovery peptides that support hypertrophy.
CJC-1295 (No DAC)
The foundation of any GH peptide stack. CJC-1295 (No DAC) amplifies natural growth hormone pulses for increased IGF-1, better recovery, and lean mass gains. Most commonly stacked with Ipamorelin.
- Natural pulsatile GH release
- No cortisol or prolactin elevation
- Synergistic with Ipamorelin
- Improves sleep and recovery
- Requires empty stomach dosing
- Short half-life (~30 min)
- Best results require stacking
Ipamorelin
The cleanest GHRP available. Triggers growth hormone release without the cortisol, prolactin, or hunger spikes seen with GHRP-2/6. Ideal for sustained use in body composition protocols.
- No cortisol, prolactin, or appetite spikes
- Very well-tolerated for long-term use
- Excellent synergy with CJC-1295
- Promotes deep sleep (GH release)
- Moderate GH release compared to GHRP-2
- Best used in a stack, not standalone
- Requires cycling
IGF-1 LR3
A modified IGF-1 with a 20+ hour half-life (vs 15 minutes for natural IGF-1). Directly promotes muscle cell proliferation and hyperplasia — actual new muscle fiber creation, not just hypertrophy.
- Promotes muscle hyperplasia (new fibers)
- Very long half-life (20+ hours)
- Potent anabolic effects
- Also promotes recovery
- Potent — requires careful dosing
- Can cause hypoglycemia
- More advanced peptide, not for beginners
- Expensive
How We Ranked These
Ranked by impact on lean mass, GH/IGF-1 elevation, tolerability for sustained use, and suitability across experience levels. Peptides that support both muscle growth and recovery score higher.
Beginner Recommendation
Start with CJC-1295 + Ipamorelin — the safest, most effective GH stack. Add MK-677 if you want oral dosing or extra appetite for bulking.
View Growth Hormone Stack→