A new era of doping? Use of peptide and peptide-analog drugs in recreational and professional sport and bodybuilding: a critical review — VialBase Research
CJC-1295 identified among most popular GH-releasing peptides in sport
- CJC-1295 identified among most popular GH-releasing peptides in sport
- Peptides marketed as more selective and ostensibly safer alternatives to AAS
- Clinical evidence supporting peptide use in sport is limited
- Most studies examine therapeutic applications under controlled dosing, not athletic enhancement
- Enhanced stability from DPP-IV-resistant amino acid substitutions makes CJC-1295 attractive
Summary
Critical review of peptide and peptide-analog drug use in recreational and professional sport. Documents the evolution from anabolic-androgenic steroids to novel peptides including growth hormone secretagogues (ipamorelin), GHRH analogs (CJC-1295, sermorelin), and synthetic fragments (Frag 176-191, KPV). Notes their pharmacological profiles, including enhanced stability and receptor selectivity, have made them attractive in both medical research and bodybuilding communities.
Key Findings
- CJC-1295 is among the most popular GHRH analogs used by athletes and bodybuilders
- Despite growing popularity, clinical evidence for sport performance enhancement is limited
- Most published studies examine therapeutic applications under controlled dosing regimens
- There is significant extrapolation from therapeutic to performance contexts without adequate evidence
- Regulatory gaps allow peptides to be marketed and distributed with minimal oversight
Relevance to CJC-1295
Important for understanding the gap between popular use and scientific evidence for CJC-1295. While the peptide has legitimate pharmacokinetic data showing GH/IGF-1 elevation, its use for athletic performance enhancement lacks rigorous clinical support. Also relevant to Ipamorelin — both are discussed as popular secretagogues in this review.
Citation
Coutinho LFD, et al. J Sports Med Phys Fitness. 2026 Mar 25. PMID: 41880199
See Also
- Parent compound: CJC-1295
- Ipamorelin
- Sermorelin