Methylene Blue is commonly sold or discussed for focus, memory, mood, and other cognitive goals.
Also known as methylene blu · methylene blue
Research shortlist · Sep 12, 2026
No exact product basis had a qualifying vendor in the Sep 12, 2026 research snapshot.
Vendor records are available below, but the Sep 12, 2026 research snapshot did not support a same-product shortlist.
What it is
Methylene blue is an organic chloride salt having 3,7-bis(dimethylamino)phenothiazin-5-ium as the counterion. A commonly used dye that also exhibits antioxidant, antimalarial, antidepressant and cardioprotective properties. It has a role as an antioxidant, an antimicrobial agent, a physical tracer, an antidepressant, an EC 3.1.1.8 (cholinesterase) inhibitor, an antimalarial, an EC 1.4.3.4 (monoamine oxidase) inhibitor, an acid-base indicator, a fluorochrome, a neuroprotective agent, a histological dye, a cardioprotective agent and an EC 4.6.1.2 (guanylate cyclase) inhibitor. It contains a 3,7-bis(dimethylamino)phenothiazin-5-ium. The listed molecular formula is C16H18ClN3S. PepGrades separately preserves the catalog category because a chemical identity record does not establish a use, outcome, or product quality.
This label describes the available research record, not whether the compound is safe or effective for an individual.
Research context
5 registered studies were found under this name in the current review. Each study still needs to be checked for the exact compound identity, population, endpoints, and results.
Search indexed research for this compound ↗Market context
Methylene Blue is commonly sold or discussed for focus, memory, mood, and other cognitive goals. That describes market demand, not proof that the compound is safe or effective.
Market demand and online discussion do not establish product quality, safety, or effectiveness.Same format. Same amount.
0 of 0 formats had a qualifying research shortlist on Sep 12, 2026. Vendor counts below reflect the available price observations.
Vendor profiles and catalog information are still available below.
Vendor directory
Grades describe the vendor record overall. They are not a test result for every product.
| Vendor | Grade | Compared offers | In stock when checked | Lowest effective package | Profile |
|---|---|---|---|---|---|
| Southern AminosVendor grade | Grade A- | Not available | Not available | Not availableNo market observation | View → |
| Glacier AminosVendor grade | Grade B+ | Not available | Not available | Not availableNo market observation | View → |
| Simple PeptideVendor grade | Grade B | Not available | Not available | Not availableNo market observation | View → |
| Coffee and PeppersVendor grade | Grade B | Not available | Not available | Not availableNo market observation | View → |
| Paramount PeptidesVendor grade | Grade B | Not available | Not available | Not availableNo market observation | View → |
| RUOVendor grade | Grade B | Not available | Not available | Not availableNo market observation | View → |
| Premier Bio LabsVendor grade | Grade A- | Not available | Not available | Not availableNo market observation | View → |
| Mile High CompoundsVendor grade | Grade B | Not available | Not available | Not availableNo market observation | View → |
| Swiss ChemsVendor grade | Grade C | Not available | Not available | Not availableNo market observation | View → |
Sources and review
Last editorial review: Aug 30, 2026. Sources support the compound guide only and do not affect vendor grades.