Source comparison
Best Peptides Bodybuilding 2026: Mechanism and Application Comparison
This table compares the most research-backed peptides for bodybuilding by mechanism, typical dosing protocols, and real-world application context. MK-677 (Ibutamoren) Ghrelin receptor agonist. Stimulates endogenous GH and IGF-1 12.5–25mg daily oral 24 hours /
This comparison does not assign a generated winner or score.
- This table compares the most research-backed peptides for bodybuilding by mechanism, typical dosing protocols, and real-world application context.
- MK-677 (Ibutamoren)
- Ghrelin receptor agonist. Stimulates endogenous GH and IGF-1
- 12.5–25mg daily oral
- 24 hours / once daily
- Sustained GH elevation, lean mass gain, improved sleep quality
- Gold standard for non-pulsatile GH secretion. No desensitization, well-tolerated long-term
- CJC-1295/Ipamorelin
- GHRH analog + selective GHRP. Amplifies natural GH pulses
- 100–200mcg each, 2–3× weekly
- CJC: 6–8 days / Ipamorelin: 2 hours
- Mimics physiological GH pulsatility, recovery enhancement, body recomposition
- Best option for preserving natural GH rhythm. Avoids cortisol/prolactin spikes of older GHRPs
- Hexarelin
- Potent GHRP. Highest receptor affinity in class
- 100–200mcg daily for 4–6 weeks max
- 1–2 hours / daily or twice daily
- Aggressive short-term GH stimulation, strength gain
- Most potent secretagogue but desensitizes quickly. Use sparingly
- BPC-157
- VEGF upregulation, angiogenesis, nitric oxide modulation
- 250–500mcg twice daily, locally injected
- Short (under 4 hours) / twice daily
- Tendon/ligament repair, injury recovery, gut healing
- No human Phase III data, but mechanism is sound and anecdotal evidence is strong
- TB-500 (Thymosin Beta-4)
- Actin polymerization, cell migration, systemic repair
- 2–5mg twice weekly (loading), 2mg monthly (maintenance)
- ~7–10 days / twice weekly
- Systemic tissue repair, inflammation reduction, joint health
- Complements BPC-157. Broader systemic effect, less injury-site-specific
- SLU-PP-332
- ERRα/ERRγ agonist. Mimics endurance training adaptations
- No established human dose (investigational)
- Unknown / investigational only
- Metabolic conditioning, mitochondrial biogenesis, endurance
- Experimental frontier. Not proven in humans, sourcing limited