Conditions Library
Research areas indexed by physiological focus. Each guide is sourced from peer-reviewed preclinical and clinical literature with citations linking to the primary source.
Sourced from third-party research
All summaries below are compiled from independent, peer-reviewed publications indexed on PubMed, PubMed Central (PMC), NIH, and primary medical journals (NEJM, Lancet, JAMA, JCEM, Cell Metabolism, and others). PepGuide does not author these studies — citations are provided so every claim can be verified at its primary source. Educational content only; not medical advice.
Body Composition
Fat Loss & Body Composition
Lipolysis-modulating peptides have been studied for their ability to reduce visceral and subcutaneous adipose tissue without altering insulin sensitivity (AOD-9604) or, in the case of GLP-1 / GIP agonists, by acting on appetite, gastric emptying, and energy expenditure.
Metabolic Health & Insulin Sensitivity
GLP-1, GIP, and mitochondrial-derived peptides have published clinical and preclinical data on glycemic control, hepatic fat reduction, and insulin sensitivity.
Recovery
Recovery & Soft-Tissue Healing
BPC-157 and Thymosin β4 / TB-500 fragments are the most extensively studied compounds for tendon, ligament, muscle, and gastrointestinal mucosa repair in preclinical models. Human data remain limited and largely anecdotal.
Systemic Inflammation
Several research peptides modulate cytokine signaling, mast-cell activity, and NF-κB pathways in preclinical inflammatory models. Most evidence is from rodent studies; human inflammatory disease data are early.
Joint & Connective Tissue Support
Peptides studied for chondrocyte support, collagen remodeling, and synovial healing in animal models of osteoarthritis and ligament injury.
Gut & GI Mucosa Health
BPC-157 is derived from a protective gastric protein and has the largest preclinical literature for GI mucosal protection — covering NSAID-induced ulcers, IBD models, and fistula healing.
Athletic Performance & Recovery
Most peptides studied for athletic performance act indirectly — through improved recovery, GH/IGF-1 axis restoration, or mitochondrial function. Many of these compounds are prohibited by WADA in competitive athletes.
Compounds referenced are sold strictly for in-vitro research use only. Not for human or veterinary use. References do not constitute endorsement of any clinical application.