P21 UK Suppliers

Choosing a P21 supplier in the UK

There are 3 UK suppliers stocking P21 in our directory, with 10mg prices from £27.00 up to £75.95 (average £43.32). Alpha Peptides® is the keenest on price today at roughly £2.70/mg, but the cheapest supplier isn't always the right one — delivery, testing and reputation matter just as much.

What makes a good P21 supplier

We'd shortlist suppliers that offer:

• Third-party lab testing — an independent certificate of analysis for every batch.
• UK-based dispatch — faster delivery, no customs delays and easier returns.
• Transparent pricing — clear per-vial and per-mg costs with no surprises at checkout.
• Verified reviews — a track record from real customers you can actually check.
• Clear policies — upfront shipping times, payment options and refund terms.

How much do UK P21 suppliers charge?

Expect to pay around £43.32 for the 10mg dosage, dropping to £27.00 with the best-value supplier and rising to £75.95 at the top end — a spread of roughly 64% across the directory. Each listing above links to the supplier's full profile with their delivery, payment and testing details.

Buying from a P21 supplier safely

Research peptides are supplied for in-vitro laboratory use only. Favour established suppliers with verified reviews and independent testing, and ensure any purchase complies with the law in your jurisdiction.

For in-vitro laboratory research use only. We compare suppliers — we don't sell, supply or ship P21 or any other peptide.