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Semax price in the UK, October 2026
What UK research peptide suppliers charge for Semax per mg: 11 single-vial listings from 9 suppliers, checked on 16 October 2026.
- Median £/mg
- £3.50
- Interquartile range
- £3.30–£4.40
- 25th to 75th percentile of supplier figures
- Range £/mg
- £1.40–£6.00
- Suppliers
- 9
- Listings
- 11
Price per mg by vial size
| Vial size | Suppliers | Listings | Median £/mg | Lowest £/mg | Highest £/mg | Median vial price |
|---|---|---|---|---|---|---|
| 5 mg | 4 | 4 | £4.70 | £3.40 | £7.00 | £23.49 |
| 10 mg | 7 | 7 | £3.50 | £1.40 | £5.00 | £35.00 |
Figures for a vial size are published from 3 suppliers up; smaller samples show their counts.
Market snapshot
- Listings in stock
- 100%
- Listings on sale
- 9%
- Listings with free UK delivery on offer
- 73%
- including free delivery above a basket value
Single lyophilised vials, public list prices, one figure per supplier. How we measure
What drives the Semax price
Semax is the heptapeptide Met-Glu-His-Phe-Pro-Gly-Pro, formula C37H51N9O10S. Its N-terminal methionine is sensitive to oxidation, so cleavage needs scavengers and the analytical method has to separate the methionine sulfoxide from the target peptide, which adds a little to release testing. The C-terminal Pro-Gly-Pro motif couples cleanly. Otherwise this is an inexpensive, all-standard sequence, and the market prices it that way: UK suppliers list 5 mg and 10 mg vials, with the larger size markedly cheaper per mg. Because the chain is short and unmodified, most of the difference between a cheap and a dear Semax listing comes from the supplier's margin, testing and vial overhead rather than from the chemistry. All listings recorded for Semax in this edition were in stock on the check date. Checking a vial price against the median for its own vial size is the quickest way to place any Semax listing in the UK market.
British Peptide Labs stocks Semax with independent third-party testing by PeptideVerify and free next-day tracked UK delivery. Buy Semax
UK Research Peptide Price Index, October 2026