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Peptide Library
Comprehensive profiles on 72 research peptides — mechanisms, half-lives, stacking protocols, and more.
Browse library →Bioregulator Guide
A research guide to the Khavinson short-peptide bioregulators — the gene-regulation hypothesis, synthetic analogs vs. organ extracts, and the individual compounds.
Read the guide →Comparisons
Side-by-side breakdowns of popular peptides and supplements — mechanisms, evidence, dosing, and how to choose between them.
Compare compounds →Featured Vendors
The vetted alphabetical list of research peptide suppliers — with third-party testing, published COAs, and the quality criteria Prof. Peptide uses to include them.
See vetted vendors →Prices
Compare research-peptide prices across 178 vendors — normalized to $/mg by vial size, post-code, and sorted lowest-first.
Compare prices →Coupon Codes
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View all newsNovember 7, 2026
Is CagriSema Better Than Semaglutide? A Type 2 Diabetes Meta-Analysis Finds the Edge Is Weight, Not Blood Sugar
A Bayesian meta-analysis of six randomized trials in type 2 diabetes (Diabetes, Obesity & Metabolism, October 27, 2026): against semaglutide 2.4 mg, CagriSema lowered body weight a further 5.84 points (95% CrI -10.08 to -2.15), while the extra HbA1c reduction, -0.21 points, had an interval crossing zero. Against placebo, gastrointestinal events and adverse-event discontinuations were more common.
Read more →November 6, 2026
Retatrutide for Sleep Apnea: Two Phase 3 Trials in the NEJM Report Lower Apnea-Hypopnea Index Scores
The New England Journal of Medicine published TRIUMPH-1-OSA (243 adults without type 2 diabetes) and TRIUMPH-2-OSA (448 with it) on October 21, 2026. At 80 weeks the apnea-hypopnea index changed by up to -34.3 and -25.4 events per hour with retatrutide versus about -10 with placebo. The results on both estimands, and how they sit beside tirzepatide's approved sleep apnea indication; no trial has compared the two.
Read more →November 6, 2026
Orthopaedic Journal JAAOS Reviews BPC-157, Thymosin Beta-4 and TB-500: No Controlled Orthopaedic Evidence
A narrative review in the Journal of the American Academy of Orthopaedic Surgeons (October 27, 2026) found one small uncontrolled human case series for BPC-157 in musculoskeletal use, no controlled orthopaedic evidence for any of the three compounds, and no validated equivalence between TB-500 and full-length thymosin beta-4. It concludes that routine clinical use cannot currently be recommended.
Read more →Built for researchers
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