Analytical method explainers, handling guidance and cited reviews of what published research has actually investigated. Nothing here is dosing advice.
Selank vs Semax, from the published research: different parent molecules, different questions. Selank is studied for anxiolytic activity, Semax for cognition and neuroprotection. Neither is Western-approved.
What published research has actually investigated on Selank: indexed human data, rodent studies, and why circulating dosing figures are unverified.
What research has actually investigated for glutathione: oral, IV and intranasal amounts used in human trials, preclinical work, and unverified protocols.
A sober review of the published DSIP (emideltide) literature: what human trials and animal studies investigated, and why the clinical evidence is thin.
An FDA advisory committee recommended six peptides - BPC-157, KPV, TB-500, MOTS-c, epitalon and Semax - for the 503A compounding list on 23-24 July 2026. It was not FDA approval. What the vote was, and what it does not change.
SS-31, MOTS-c and NAD+ reviewed from primary research: the quantities investigated in published studies and trials. Not a dosing recommendation.
TB-500 dosage, reviewed from primary research: what quantities Thymosin β4 studies and clinical trials investigated — and why TB-500 has no established human dose.
GHK-Cu dosage, reviewed from primary research: the topical concentrations, registered trials and preclinical work studied — and why there is no established systemic human dose.
Semax dosage, reviewed from primary research: the intranasal formulations and Russian clinical studies investigated — and why there is no MHRA/EMA/FDA-approved dose.
Retatrutide dosage from primary research: the weekly amounts (1/4/8/12 mg) studied in Phase 2 trials — an investigational drug with no approved dose. Research, not a recommendation.
Tesamorelin dosage from primary research: the 2 mg daily amount studied and FDA-approved for HIV lipodystrophy only — prescription-only, not a recommendation.
BPC-157 dosage explained through published research: the amounts used in animal studies and human trials, fully cited. Not a dosing recommendation.
What HPLC purity testing measures, how a chromatogram is read and why a percentage figure alone does not tell you whether a research peptide is what it claims.
Purity and identity are different questions. How mass spectrometry confirms a research peptide's molecular weight, and why HPLC alone cannot answer identity.
A line-by-line guide to reading a peptide COA: batch code, measured quantity, purity, methodology and the details that separate a real report from a template.
Why research peptides are freeze-dried, what lyophilisation protects against, and how the cold chain between laboratory and delivery affects sample integrity.
Storage temperatures, light exposure, freeze-thaw cycles and sterile handling: the laboratory practice that keeps a research peptide sample usable.
Choosing a reconstitution solvent in the laboratory: how bacteriostatic water and acetic acid 0.6% differ, and which research peptides need which solvent.
PepSource supplies research reagents to qualified researchers. Please confirm you understand how these products are supplied.
