Prices checked 25 Sept 2026 · 2 listings · 1 in stock · Other compounds sold by peptide stores
No priced listings with a stated quantity yet.
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Regulatory status
Methylene blue (methylthioninium chloride) is a prescription-only medicine in many countries. Material sold as a 'research' product is not an approved medicine.
In Europe the regulator is the European Medicines Agency (EMA), with each country's own medicines regulator. Rules on buying, importing and using this product differ by country. Suppliers list it for laboratory research; nothing here is medical advice.
Showing 2 of 2 suppliers · prices in EUR only, never converted
From €0.06/mg (10mg)
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| Methylene blue USP grade 100x10mg | 10mg | €60.00 | €0.06/mg | In stock | On their site ↗ |
Prices as last checked on their site. The supplier confirms the final price and availability.
73 products tracked · Ships to Europe
From €6.28/mg (MB - 5-mg, 60)
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| Methylene Blue | MB - 5-mg, 60 | €31.39 | €6.28/mg | Out of stock | On their site ↗ |
Prices as last checked on their site. The supplier confirms the final price and availability.
Told when Methylene Blue gets cheaper in Europe
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At a glance · 25 Sept 2026
Methylene blue (methylthioninium chloride) is a synthetic dye first made in 1876, not a peptide, and the active ingredient of a licensed intravenous medicine for methaemoglobinaemia. At low doses it acts as an alternative electron carrier in mitochondria, which is the basis of its use as a nootropic in small trials of memory, fear extinction and bipolar depression. Its reduced form was tested in large Alzheimer’s trials that missed their primary endpoints. It is a prescription-only medicine with a boxed warning for serotonin syndrome, and the material sold by peptide stores is unlicensed. Read the full Methylene Blue guide, with the published research and references.
The median listed price per mg across every tracked supplier listing Methylene Blue 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
Catalogue changes, last 30 days
33 listings added · 0 withdrawn
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 Methylene Blue is and what published studies have found, see our Methylene Blue 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: read are peptides legal in Europe? and see all suppliers serving Europe.
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.
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.
2 of the suppliers PepFinder tracks list Methylene Blue and are based in or ship to Europe. The highest rated are RCpeptides, Beyond Peptides. The list on this page is ranked by PepFinder Score, which weighs reliability, delivery, pricing, support and customer reviews, with stores based in Europe placed before those shipping in from abroad; nobody pays to be included or to rank higher.
Suppliers on this page list Methylene Blue in MB - 5-mg, 60, 10mg. 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.
Across the EU, Iceland, Liechtenstein, Norway and Switzerland, a peptide that counts as a medicine cannot be placed on the market without an authorisation, and peptides sold as research products have none; penalties, possession rules and doping laws are set by each country and differ. Our page on whether peptides are legal in Europe sets out the rules with a link to every source. This is general information, not legal advice.
Personal import rules are set nationally and differ widely: for example, Norway stops medicines sent by post, Austria says importing unauthorised peptide products is prohibited, and Switzerland allows one month's supply of a medicine for your own use but takes a zero-tolerance approach to doping substances. Each supplier on this page shows where it is based, so you can see whether an order would cross a border.
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 Methylene Blue from these suppliers, so check each supplier's own site.
How this list is built: suppliers appear because they list Methylene Blue 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.
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