01
8.3/ 10PepFinder Score
From US$5.00/mg (5 mg)
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| PE-22-28 5 mg | 5 mg | US$25.00 | US$5.00/mg | In stock | On their site ↗ |
Prices as last checked on their site. The supplier confirms the final price and availability.
Market data · 79 suppliers · All regions
Buy PE-22-28 : 79 suppliers prices compared
79 of the suppliers we track list PE-22-28. They are ranked by PepFinder Score, which combines reliability, selection, pricing, delivery, support and customer reviews, and shown with the prices they list per mg. We don't sell PE-22-28, and we give no guidance on its use.
Prices checked 25 Sept 2026 · 99 listings · 88 in stock · Neuropeptide analogues
GBP · 16 suppliersmedian £5.52/mg
£3.49/mg£13.80/mg
USD · 20 suppliersmedian US$6.50/mg
US$2.60/mgUS$13.00/mg
EUR · 17 suppliersmedian €5.00/mg
€4.00/mg€7.49/mg
Each currency is shown separately; prices are never converted.
Regulatory status
Rules on buying, importing and using this product differ by country. Suppliers list it for laboratory research; nothing here is medical advice.
Showing 30 of 79 suppliers · prices in USD only, never converted
- 02
7.9/ 10PepFinder ScoreFrom US$4.00/mg (5mg)
Listing as named Size Price Per mg Stock PE-22-28 5mg (10 vials) 5mg US$200.00 US$4.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 03
Eros Peptides
US basedCOA page linked, not reviewed75 products tracked
Pays byCardPayPal3.9 Trustpilot(16)7.6/ 10PepFinder ScoreFrom US$4.00/mg (10MG)
Listing as named Size Price Per mg Stock PE-22-28 10MG 10MG US$39.99 US$4.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 04
7.5/ 10PepFinder ScoreFrom US$6.75/mg (10 Vials / 8mg)
Listing as named Size Price Per mg Stock PE-22-28 8mg US$60.00 US$7.50/mg In stock On their site ↗ PE-22-28 BULK PACK 10 Vials / 8mg US$540.00 US$6.75/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 05
7.2/ 10PepFinder ScoreFrom US$6.75/mg (8MG)
Listing as named Size Price Per mg Stock PE-22-28 – 8MG 8MG US$54.00 US$6.75/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 06
Pure Lab Peptides
US basedThird-party testing statedCOA page linked, not reviewed104 products tracked
Pays byCardBank transfer7.2/ 10PepFinder ScoreFrom US$6.00/mg (10mg)
Listing as named Size Price Per mg Stock PE-22-28 10mg 10mg US$59.99 US$6.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 07
7.1/ 10PepFinder ScoreFrom US$7.70/mg (10mg)
Listing as named Size Price Per mg Stock PE-22-28 10mg US$76.99 US$7.70/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 08
7.0/ 10PepFinder ScoreFrom US$13.00/mg (5mg)
Listing as named Size Price Per mg Stock PE-22-28 5mg 5mg US$65.00 US$13.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 09
Orbitrex Peptides
US basedThird-party testing statedCOA page linked, not reviewed46 products tracked · Ships to 1 country
Pays byCard6.9/ 10PepFinder ScoreFrom US$6.00/mg (10mg)
Listing as named Size Price Per mg Stock PE-22-28 10mg 10mg US$59.99 US$6.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 10
American Peptides
US basedThird-party testing statedCOA page linked, not reviewed74 products tracked · Delivery delivered in 2–3 business days · Ships to 1 country
Pays byCardCrypto3.1 Trustpilot(13)6.7/ 10PepFinder ScoreFrom US$7.00/mg (10 mg)
Listing as named Size Price Per mg Stock PE-22-28 10 mg US$70.00 US$7.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 11
6.6/ 10PepFinder ScoreFrom US$7.00/mg (8mg)
Listing as named Size Price Per mg Stock PE 22 28 8mg US$55.99 US$7.00/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 12
Leo Research
US basedThird-party testing statedCOA page linked, not reviewed58 products tracked · Delivery Please allow 48 hours for final delivery resolution. · Ships to 1 country
Pays byCard6.5/ 10PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 Atomizer As listed US$75.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 13
Third-party testing statedCOA page linked, not reviewed82 products tracked · Ships to 1 country
Pays byCardBank transferCrypto6.3/ 10PepFinder ScoreFrom US$6.90/mg (10mg)
Listing as named Size Price Per mg Stock Buy PE-22-28 10mg 10mg US$69.00 US$6.90/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 146.2/ 10PepFinder Score
From US$7.20/mg (10mg)
Listing as named Size Price Per mg Stock PE-22-28 10mg 10mg US$72.00 US$7.20/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 15Third-party testing statedCOA page linked, not reviewed
57 products tracked · Delivery Orders ship via FedEx 2-Day or USPS Priority and usually arrive within 2–3 business days once scanned. · Ships to 36 countries
Pays byCard6.1/ 10PepFinder ScoreFrom US$6.50/mg (10MG)
Listing as named Size Price Per mg Stock PE-22-28 – 10MG 10MG US$65.00 US$6.50/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 16
6.0/ 10PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 As listed US$0.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 17
Nationwide Peptides
US basedThird-party testing statedCOA page linked, not reviewed134 products tracked
Pays byCard3.8 Trustpilot(2)5.9/ 10PepFinder ScoreFrom US$5.80/mg (5mg)
Listing as named Size Price Per mg Stock PE-22-28 Peptide 5mg US$29.00 US$5.80/mg In stock On their site ↗ PE-22-28 Peptide 10mg US$58.00 US$5.80/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 18Third-party testing statedCOA page linked, not reviewed
27 products tracked
Pays byCard5.9/ 10PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28_RUO 10mg - Profoundpeptides.us 10mg — — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 19
Paramount Peptides
US basedThird-party testing statedCOA page linked, not reviewed79 products tracked
5.6/ 10PepFinder ScoreFrom US$5.53/mg (10mg)
Listing as named Size Price Per mg Stock PE-22-28 (10mg) 10mg US$55.25 US$5.53/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 20
5.3/ 10PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 As listed US$39.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 21
5.3/ 10PepFinder ScoreFrom US$6.88/mg (8MG)
Listing as named Size Price Per mg Stock PE-22-28 – 8MG 8MG US$55.00 US$6.88/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 22
5.3/ 10PepFinder ScoreFrom US$2.60/mg (10mg)
Listing as named Size Price Per mg Stock PE 22 28 10mg 10mg US$25.99 US$2.60/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 23
Third-party testing statedCOA page linked, not reviewed283 products tracked · Ships to 1 country
Pays byCardCryptoPayPalWarning: Not confirmed as Limitless Life Nootropics Details
5.0/ 10PepFinder ScoreFrom US$6.75/mg (8mg)
Listing as named Size Price Per mg Stock PE-22-28 (8mg) 8mg US$54.00 US$6.75/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 24
–PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 As listed US$73.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 25
Third-party testing statedCOA page linked, not reviewed63 products tracked · Ships to 2 countries
4.6 Trustpilot(18)–PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 As listed US$46.88 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 26Third-party testing statedCOA page linked, not reviewed
166 products tracked
Pays byCardBank transferCrypto–PepFinder ScoreFrom US$3.80/mg (10mg)
Listing as named Size Price Per mg Stock PE-22-28 5mg US$23.99 US$4.80/mg In stock On their site ↗ PE-22-28 10mg US$37.99 US$3.80/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 27
–PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 (research peptide) As listed US$45.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 28
Pure Peptide Labs
US basedThird-party testing statedCOA page linked, not reviewed73 products tracked
Pays byCard–PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 As listed US$49.95 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 29
–PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 10mg (10 Vials / Kit) 10mg US$80.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 30
–PepFinder ScoreListing as named Size Price Per mg Stock PE-22-28 As listed — — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
Told when PE-22-28 gets cheaper
Set a target price and we check every validated listing daily. Free with an account.
At a glance · 25 Sept 2026
- Suppliers tracked
- 79 list PE-22-28, 88 listings in stock
- Price per mg (GBP)
- £3.49/mg to £13.80/mg, median £5.52/mg, across 32 listings from 16 suppliers
- Test certificates
- Not yet collected by PepFinder for PE-22-28; check each supplier's site. How to read a COA
- Legal status
- Rules differ by country. Legal status by country
What PE-22-28 is
PE-22-28 is a synthetic seven-amino-acid peptide designed in 2017 by a French research group as a shortened, longer-lasting version of spadin, a natural peptide fragment that blocks the TREK-1 potassium channel. In mice it produced antidepressant-like behaviour within four days and increased new neuron growth in the hippocampus. It has never been tested in a human, and every claim made for it rests on rodent and cell studies from a single laboratory. Read the full PE-22-28 guide, with the published research and references.
PE-22-28 vial and syringe calculator
Arithmetic for the vial sizes stores list: concentration after adding water, and what an amount is in units on a U-100 syringe. It does not suggest an amount. Full calculator and worked examples.
Concentration
1 mg/mL
10 mcg per unit on a U-100 syringe · 100 mcg per 0.1 mL
Enter an amount per draw to see how many units it is and how many draws the vial holds.
PE-22-28 market over time
The median listed price per mg across every tracked supplier listing PE-22-28 in each currency, recorded daily from validated listings only. Days with too few listings to publish are left out, not estimated. How we validate prices
GBP · median per mg £5.52/mg
We began recording daily market statistics on 25 Sept 2026. A trend appears once there is more than one day of data.
USD · median per mg US$6.75/mg
We began recording daily market statistics on 25 Sept 2026. A trend appears once there is more than one day of data.
Catalogue changes, last 30 days
99 listings added · 0 withdrawn
- 25 Sept 2026Xcel PeptidesNew listing: PE-22-28
- 25 Sept 2026VPeptideNew listing: PE-22-28 — 10mg | Selective GalR2 Galanin Fragment (10-pack)
- 25 Sept 2026VPeptideNew listing: PE-22-28 — 10mg | Selective GalR2 Galanin Fragment (single-vial)
- 25 Sept 2026Union BiolabsNew listing: PE-22-28 10mg (10mg)
- 25 Sept 2026UK Peptides ShopNew listing: PE-22-28 5mg (5mg)
- 25 Sept 2026UK Peptide StoreNew listing: PE-22-28 5mg (5mg)
- 25 Sept 2026Swiss Peptide LabNew listing: PE-22-28 (8mg) (8mg)
- 25 Sept 2026Simple Life ScienceNew listing: PE-22-28 10mg (10mg)
- 25 Sept 2026Seacoast AminosNew listing: PE 22 28 10mg (10mg)
- 25 Sept 2026RetalabsNew listing: PE-22-28 (10-mg)
Before you choose a PE-22-28 supplier
Price per mg is only half the comparison. Check that the supplier publishes a certificate of analysis for the batch it is selling, ideally from an independent laboratory, and that the certificate confirms identity as well as purity: our guide on how to read a COA shows what to look for. A price far below the rest of the list is more often a warning than a bargain; peptide prices explained sets out why.
For what PE-22-28 is and what published studies have found, see our PE-22-28 guide. Handling questions are covered in how to store peptides, and the peptide calculator converts a vial size and water volume into concentration and syringe units. Rules on buying and importing differ by country: see legal status by country, or narrow this list to your region above.
Checking a PE-22-28 certificate of analysis
- The certificate names a laboratory you can find independently, and ideally one with no stake in the result.
- It carries a batch or lot number that matches the product page or the vial label, and a test date.
- It confirms identity by mass spectrometry, not only purity by HPLC. Purity alone does not show the vial contains PE-22-28.
- It includes the chromatogram and mass spectrum, not just a summary table.
- Where the laboratory offers online verification of its reports, the report number checks out.
Red flags
- No certificates at all, or certificates available only “on request”.
- The same certificate used for several products or several years of stock.
- Payment only by cryptocurrency or bank transfer, with a discount for paying that way.
- A price far below every other supplier on this page.
- No company name, address or way to contact the business other than a web form.
- Vials labelled only with a code rather than the product name and strength.
How to spot a fake peptide supplier explains each of these in more detail, and third-party peptide testing covers what independent results can and cannot prove.
Vials, capsules and pre-mixed products
Most research peptides are sold as freeze-dried (lyophilised) powder in sealed vials, which is mixed with a diluent such as bacteriostatic water before use in the lab. Some suppliers also sell pre-mixed solutions, nasal sprays or capsules under the same name. These are different products with different stability and dosing, so compare price per mg only between the same form, and check which form a listing is before comparing it with the rest of the table.
PE-22-28: questions
Where can I buy PE-22-28?
79 of the suppliers PepFinder tracks list PE-22-28. The highest rated are Bulk Peptide Supply, Bulk Peptide Wholesale, BioPlex Peptides. The list on this page is ranked by PepFinder Score, which weighs reliability, delivery, pricing, support and customer reviews; nobody pays to be included or to rank higher.
How much does PE-22-28 cost?
Listed prices in GBP run from £3.49/mg to £13.80/mg, median £5.52/mg, across 32 listings from 16 suppliers. Compare price per mg rather than price per vial, and only within one currency; a price far below the rest is more often a warning than a bargain.
What sizes is PE-22-28 sold in?
Suppliers on this page list PE-22-28 in 2mg, 5 mg, 5mg, 5mg - Ultimate, 5MG, 8mg. Most research peptides are sold as freeze-dried powder in sealed vials; capsules, sprays and pre-mixed solutions are different products, so compare price per mg only between the same form.
Is PE-22-28 legal to buy?
It depends on the country. PepFinder summarises the rules for the UK, the US, Canada, Australia, New Zealand and Europe, with links to the regulators' own statements. Choose a region above to see suppliers and the rules for that country.
How do I check a PE-22-28 supplier's test results?
Ask for a certificate of analysis for the batch being sold, and check that it names the laboratory, the batch number and the test date, and that it confirms identity by mass spectrometry as well as purity by HPLC. PepFinder has not yet collected certificates for PE-22-28 from these suppliers, so check each supplier's own site.
How this list is built: suppliers appear because they list PE-22-28 on their own website, read by our catalogue checks; nobody pays to be included or to move up. Ranking is by PepFinder Score. Prices, sizes and stock are as each site listed them when checked and may have changed. Provisional scores are based on incomplete research.