Peer-Reviewed Insights

Research Blog

Evidence-based articles on peptide mechanisms, dosing protocols, clinical data, and research methodology. Cited sources. No hype.

IGF-1 vs IGF-1 LR3: Why the Modified Version Lasts Twelve Times Longer
Growth Hormone

IGF-1 vs IGF-1 LR3: Why the Modified Version Lasts Twelve Times Longer

IGF-1 LR3 was engineered to escape the binding proteins that suppress native IGF-1 in serum. The modification is a 13-residue extension and an arginine substitution. Here is what those two changes do and why the cell-culture and in vivo data look different than they do for the native peptide.

10 min read
CJC-1295 With vs. Without DAC: Pharmacokinetics, Half-Life, and What Matters for Research
Growth Hormone

CJC-1295 With vs. Without DAC: Pharmacokinetics, Half-Life, and What Matters for Research

CJC-1295 with DAC has a half-life of 5.8–8.1 days; the no-DAC version clears in 20–30 minutes. A data-grounded breakdown of what those numbers mean for GH pulsatility and research protocol design.

9 min read
The CJC-1295 + Ipamorelin Stack: Research Rationale and Synergy Data
Growth Hormone

The CJC-1295 + Ipamorelin Stack: Research Rationale and Synergy Data

CJC-1295 and Ipamorelin target different receptor systems — GHRH receptors and GHS-R1a respectively — creating synergistic GH pulses that exceed either compound alone. A mechanistic breakdown of why the combination works.

10 min read
AOD 9604 Research: What 900 Clinical Trial Participants Taught Us About This GH Fragment
Growth Hormone

AOD 9604 Research: What 900 Clinical Trial Participants Taught Us About This GH Fragment

AOD 9604 went through multiple human clinical trials enrolling 900+ participants before Metabolic Pharmaceuticals discontinued it in 2007. The story of what those trials found — and why the compound failed commercially despite real efficacy signals — is one of the most instructive in peptide research.

12 min read
Growth Hormone Secretagogues Explained: The Researcher's Guide to GHRH and GHRP Peptides
Growth Hormone

Growth Hormone Secretagogues Explained: The Researcher's Guide to GHRH and GHRP Peptides

GHRH analogs like CJC-1295 and ghrelin mimetics like Ipamorelin work through distinct pathways to stimulate the body's own GH production — a fundamentally different approach from exogenous growth hormone. Here's the endocrinology behind how they work.

11 min read