Understand the source comparison
Comparison: Peptide Classes for Bodybuilding Research
GH Secretagogues (GHRP-2, Ipamorelin) Ghrelin receptor agonism → pituitary GH release 0.8–1.5kg Moderate. Via enhanced sleep quality $80–$140 Best evidence for measurable hypertrophy when stacked with GHRH analogue GHRH Analogues (CJC-1295) Amplifies GH pulse
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- GH Secretagogues (GHRP-2, Ipamorelin)
- Ghrelin receptor agonism → pituitary GH release
- 0.8–1.5kg
- Moderate. Via enhanced sleep quality
- $80–$140
- Best evidence for measurable hypertrophy when stacked with GHRH analogue
- GHRH Analogues (CJC-1295)
- Amplifies GH pulse duration, elevates IGF-1
- 1.0–1.8kg (when stacked)
- Moderate
- $100–$180
- Synergistic with GHRPs. Limited standalone efficacy
- Tissue Repair Peptides (BPC-157, TB-500)
- Angiogenesis, fibroblast migration, satellite cell activation
- Negligible direct gain
- High. Accelerates tendon/ligament healing
- $70–$120
- Injury prevention tool, not mass builder
- Ghrelin Mimetics (MK-677)
- Oral GH secretagogue, appetite stimulation
- 1.2–2.5kg
- Moderate. Improves REM sleep architecture
- $50–$90
- Easiest administration, highest water retention risk
- Thymus Peptides (Thymalin)
- Immune modulation, T-cell support
- None
- Low for hypertrophy, high for immune protection
- $60–$100
- Supportive during contest prep deficits
- The comparison reveals a pattern: peptides help with bodybuilding through indirect pathways. Hormone optimisation, recovery enhancement, immune support. Not through direct anabolic receptor binding. Expecting peptide-driven gains equivalent to a 500mg/week testosterone cycle reflects a fundamental misunderstanding of their pharmacology.