GHK-Cu stings: what is known about site reactions, and when to see a doctor
Why GHK-Cu site reactions are reported but never measured, what the evidence covers, our grades, and the red flags that mean see a doctor or call 112.
Author
The P&P Lab
The in-house research team at Peps & Protocols. We read the primary papers and the case series everyone cites but nobody opens, grade every claim A to D on the human evidence, and explain what to test before you start. We sell no compounds.
How do you know if a peptide vendor is legit? 12 checks for European buyers
Twelve checks you can run in ten minutes: batch reports, lab verification, EU dispatch, payment, company details and returns. Five shops scored.
Bacteriostatic water vs sterile water: the difference, and why the label matters
Bacteriostatic water adds 0.9% benzyl alcohol and is multi-use; sterile water is single use. Labels, EU availability and why you should test the water.
Are research peptides legal in Spain? AEMPS, aduana and research use only (2026)
Research peptides in Spain: the Ley de garantías, AEMPS, customs rules for private buyers, pharmacies and what to check. Plain language, dated, sourced.
Are research peptides legal in Germany and Austria? Zoll, AMG and what actually happens (2026)
Germany and Austria in 2026: the AMG, Zoll, the anti-doping law, Austria's AWEG and the BASG warning to buyers. Plain language, dated, sourced.
Are research peptides legal in the Netherlands? (2026)
Research peptides in the Netherlands: the Geneesmiddelenwet, the IGJ's 2026 orders, customs rules and what to check. Plain language, dated, sourced.
Best research peptide suppliers in Europe (2026): six shops compared on checkable facts
Six EU research peptide suppliers checked on 12 Oct 2026: dispatch, batch reports, payment, returns and company details. Shared ownership disclosed.
BPC-157 vs TB-500: what is the difference, and what does the evidence say?
BPC-157 is a 15 amino acid gastric peptide, TB-500 a 7 amino acid thymosin beta-4 fragment. What was studied, evidence grades, legal status and reports.
What personalised metabolic research can and cannot tell us about peptide signalling
Semaglutide and tirzepatide trials show averages and variation, not personal protocols for research peptides. How to read metabolic evidence properly.
Research peptide storage in the Netherlands (2026): what keeps a vial intact
How to store sealed peptide vials, why moisture, heat and freeze-thaw ruin them, what Dutch law says, and how to judge a supplier's shipping claims.