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Black&White PEPTIDES Ltd

Premium Research Peptides

99%+ purity, third-party tested by Janoshik Analytical. Trusted UK supplier of research-grade peptides in vials and pens.

99%+ Purity Janoshik Tested UK Based 40+ Peptides

Browse Our Collections

Over 40 research-grade peptides organized by category. All products for research purposes only.

99%+ Verified Purity

Every batch independently tested by Janoshik Analytical. View our full lab reports and verification keys.

View Lab Reports

What Our Customers Say

Trusted by researchers across the UK. Here's what they think.

★★★★★

"Excellent quality peptides. The Tirzepatide tested perfectly in our lab and the purity matched the Janoshik report exactly. Fast delivery too."

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James M.
Verified Buyer · Tirzepatide 20mg
★★★★★

"Been ordering BPC-157 and TB-500 for months now. Consistency is key in research and B&W delivers every time. Great communication via WhatsApp."

S
Sarah K.
Verified Buyer · BPC-157, TB-500
★★★★★

"The pre-loaded pens are a game changer for our research protocols. Much more convenient than reconstituting vials. Retatrutide pens arrived next day."

D
Daniel R.
Verified Buyer · Retatrutide Pen
★★★★★

"Best UK supplier I've found. Competitive prices, third-party testing, and the KLOW Blend is fantastic for our healing research. Highly recommend."

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Alex T.
Verified Buyer · KLOW Blend
★★★★☆

"Good range of nootropic peptides. Semax and Selank both came well-packaged and labelled clearly. Would love to see more dosage options."

M
Michael P.
Verified Buyer · Semax, Selank
★★★★★

"NAD+ 1000mg arrived quickly and the purity is outstanding. The Janoshik verification gives real peace of mind. Will be a repeat customer."

L
Laura B.
Verified Buyer · NAD+ 1000mg

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