Dispatched same day before 4pm

Research peptides, UK-stocked and lab-verified

Every batch is checked for purity and potency, with a certificate of analysis for the exact lot you receive.

BPC-157GEPPPGKPADDAGLVPX-3137-B
PinealonGHK-CuBPC-157P21SermorelinThymalinSS-31MOTS-cThymosin Alpha-1MK-677HexarelinFOXO4-DRI5-Amino-1MQKPVPinealonGHK-CuBPC-157P21SermorelinThymalinSS-31MOTS-cThymosin Alpha-1MK-677HexarelinFOXO4-DRI5-Amino-1MQKPV

Fast movers

All compounds
BPC-157 research vial
Back in stock5 / 10 mg

BPC-157

from £16.95
£2.50/mg
In stock
TB-500 research vial
2 / 5 / 10 mg

TB-500

from £16.95
£3.30/mg
In stock
MOTS-c research vial
New5 / 10 mg

MOTS-c

from £22.99
£2.60/mg
In stock
Semax research vial
Back in stock5 / 30 mg

Semax

from £21.99
£1.50/mg
In stock
Ipamorelin research vial
2D chemical structure of Ipamorelin
5 / 10 mg

Ipamorelin

from £18.99
£3.00/mg
In stock
MK-677 research vial
2D chemical structure of MK-677
25 mg

MK-677

£44.99
£1.80/mg
In stock
GHK-Cu research vial
50 / 100 mg

GHK-Cu

from £19.99
£0.35/mg
In stock
Tesamorelin research vial
New5 / 10 mg

Tesamorelin

from £39.99
£6.00/mg
In stock

Browse by mechanism

Grouped by how each compound works, not by what it is for. The names that rank are the compounds themselves.

Stacks that save

All kits & bundles

The popular research stacks, supplied as separate vials and bundled at a saving versus buying each on its own.

KLOW Kit

4 separate vials
Save 13%
GHK-Cu
50mg · £19.99
+
KPV
5mg · £22.99
+
TB-500
5mg · £21.99
+
BPC-157
5mg · £16.95

The full four-compound KLOW stack, each supplied as its own vial.

Separately £81.92
£70.99
You save £10.93

Tesamorelin + Ipamorelin Kit

2 separate vials
Save 12%
Tesamorelin
5mg · £39.99
+
Ipamorelin
5mg · £18.99

Tesamorelin paired with Ipamorelin, supplied as separate vials.

Separately £58.98
£51.99
You save £6.99

GLOW Kit

3 separate vials
Save 12%
GHK-Cu
50mg · £19.99
+
BPC-157
5mg · £16.95
+
TB-500
5mg · £21.99

GHK-Cu with the Wolverine pair, as three separate vials.

Separately £58.93
£51.99
You save £6.94

Dispatched from the UK, today

Held in our own UK facility, not drop-shipped from overseas. Order before 4pm and it goes out the same day. No customs risk, no one to three week wait.

Same-day cut-off in4pm
Stock location
United Kingdom, our facility
UK delivery
1 to 2 working days
After the 4pm cut-off
Dispatched the next working day

Reconstitution calculator

A measurement aid for laboratory handling. Set the vial mass, the diluent volume, and a target amount to see the concentration and the volume to draw.

Research notes

All notes
Methods and testing
certificate of analysis
Methods and testing

How independent purity testing works, from sample to certificate

PepNex Research
Methods and testing
certificate of analysis
Methods and testing

Reading an HPLC chromatogram: peaks, retention time, and purity

PepNex Research
Foundations
Foundations
Foundations
Foundations

Cold-chain handling and storage for lyophilised research peptides

PepNex Research

Common questions

What are research peptides?
Research peptides are short chains of amino acids supplied for in vitro laboratory research. PepNex stocks them as lyophilised (freeze-dried) powder for research use only — not for human or animal consumption.
Are PepNex peptides third-party tested?
Yes. Every batch is analysed by an independent laboratory (Janoshik Analytical and Colmaric Analyticals) using HPLC and LC-MS/MS, and the certificate of analysis is published and searchable by lot code before and after purchase.
Do you ship across the UK, and how fast?
Yes. Orders are stocked and dispatched the same day from our UK facility when placed before the daily cut-off, with free UK delivery on orders over £100.
Are these products for human use?
No. All PepNex compounds are supplied strictly for laboratory research use only. They are not for human or animal consumption, and are not a drug, food, or cosmetic.