Why a pen rather than a vial
Products are supplied strictly for laboratory and research purposes. Every batch carries independent third-party analysis, and the batch identifier printed on the unit can be matched against the report rather than taken on trust.
Independently Lab Tested
HPLC verified through independent laboratory partners on every batch, with the batch identifier printed on the unit so the report can be matched to what you hold.
Same-Day UK Dispatch
Held in domestic stock rather than drop-shipped. Express delivery, no customs, no waiting on an overseas warehouse.
Established 2020
Five years supplying researchers and serious athletes across Britain, with the batch documentation to back every claim.
Peptide pens and the wider range
Held in UK stock in both pre-filled pen and lyophilised vial format, with independent batch analysis on every unit.
Research Peptides & Growth Factors
BPC-157, TB-500, GHK-Cu, KPV, Ipamorelin, CJC-1295, Sermorelin and IGF-1 LR3
GLP-1 Receptor Agonists
Retatrutide and Tirzepatide, in pre-filled pen and lyophilised vial format
HGH & Secretagogues
Genxtropin, 2Ktropin, MK-677 and the growth hormone secretagogue range
Metabolic & Fat Loss Peptides
MOTS-c, AOD-9604, 5-Amino-1MQ and related metabolic research compounds
Ancillaries & PCT
Nolvadex, Clomid, Arimidex, Aromasin, HCG and hormonal support
Sexual Health
PT-141, Melanotan II, Cialis and the libido and erectile support range
Cognitive & Nootropic
Semax, Selank, DSIP, Modafinil and cognitive research compounds
Skin, Hair & Aesthetics
GHK-Cu, Glow peptide blends and Melanotan for dermal research
Pen and vial brands we carry
Three names, one supply chain. Every unit is traceable to the batch it came from and the laboratory that tested it.
Frequently asked questions
What is a peptide pen?
A sealed cartridge of solution made up at manufacture, dosed by dialling units on a mechanism rather than drawing to a mark on a syringe. There is no reconstitution step.
How much peptide is in one dial unit?
One dial unit is 0.01ml of solution. What that carries in peptide depends on the concentration of that specific pen, which is stated on the label.
Do pens need bacteriostatic water?
No. The cartridge arrives as a made-up solution and is a sealed system, so it needs no diluent and no preservative for repeat withdrawals.
Browse the range
Current stock, specifications and batch documentation are listed at seren-q.com.
Shop at The PED Shop