Dispatched same day before 4pm

Research peptides, UK-stocked and lab-verified

Every batch is checked for identity and purity, 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
5 / 10 mg

Ipamorelin

from £18.99£3.00/mg
In stock
MK-677 research vial
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.

GHK-Cu + KPV + TB-500 + BPC-157 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

All four compounds, 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

GHK-Cu + BPC-157 + TB-500 Kit

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

GHK-Cu with BPC-157 and TB-500, 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

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. They are not for human or veterinary use.
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.
What purity are PepNex compounds?
Every batch is released at 98% purity or higher, measured by an independent laboratory. The figure for the exact lot you receive is printed on its certificate of analysis, and batches that come back below specification are destroyed and published in the open batch log as failures.
Can I see a certificate of analysis before I buy?
Yes. Every lot code resolves to its certificate on the verify page, with the measured purity, the chromatogram, the testing laboratory and the test date, whether or not you have ordered.
Are these products for human use?
No. All PepNex compounds are supplied strictly for laboratory research use only. They are not for human or veterinary use, and are not a medicine, food, or cosmetic.