Methylene Blue Capsules (10mg/capsule, 30 capsules)

Buy Methylene Blue Capsules at Loti Labs

Methylene blue has been around longer than most research chemicals — Heinrich Caro first synthesized it at BASF back in 1876. What keeps it relevant nearly 150 years later is a combination of unique redox-cycling properties and the ability to plug directly into mitochondrial electron transport. Whether you’re running bioenergetics experiments, looking at oxidative stress pathways, or studying neuroprotective mechanisms, methylene blue gives you a well-characterized starting point backed by decades of published data.

Loti Labs offers research-grade methylene blue capsules at 10mg per capsule, verified above 98% purity by third-party HPLC. For any experiment where compound quality directly affects reproducibility, that analytical verification matters.

Methylene Blue Molecular Structure

• Chemical Name: 3,7-bis(dimethylamino)phenothiazin-5-ium chloride
• Synonyms: Methylthioninium chloride, Basic Blue 9, CI 52015
• Molecular Formula: C₁₆H₁₈ClN₃S
• Molecular Weight: 319.85 g/mol
• PubChem CID: 6099
• CAS #: 61-73-4

Methylene blue is a phenothiazinium heterocycle — three fused rings with a central thiazine, dimethylamino groups at positions 3 and 7, and that distinctive deep blue color in its oxidized state. The key to its usefulness is that it flips between two redox forms: oxidized MB⁺ (blue) and reduced leucomethylene blue MBH (colorless). That reversibility is what makes it work as an electron shuttle in mitochondrial research.

The molecule is planar enough to cross biological membranes easily and accumulates in mitochondria, which is exactly where you want it for organelle-level redox studies. Because it absorbs strongly at 665 nm, you can track its redox state spectrophotometrically in real time during experiments.

Mechanism of Action

At its core, methylene blue is an alternative electron carrier. In the oxidized form, it picks up electrons from NADH — either through Complex I or directly in the mitochondrial matrix — and the resulting leucomethylene blue hands those electrons off to cytochrome c. This lets the cell maintain membrane potential and keep making ATP even when Complex I or Complex III aren’t working properly. For anyone studying mitochondrial dysfunction, that bypass mechanism is the main reason methylene blue is in the toolkit.

Beyond electron transport, methylene blue targets several other molecular pathways:

• MAO-A Inhibition: At low concentrations, it inhibits monoamine oxidase A, useful for studying monoamine metabolism and serotonergic signaling in neuronal cell models.
• NOS Inhibition: Blocks neuronal and inducible nitric oxide synthase isoforms, helpful for studying nitrosative stress.
• Guanylate Cyclase Inhibition: Inhibits soluble guanylate cyclase and reduces cGMP levels, widely used in vascular smooth muscle research.
• Protein Aggregation Inhibition: Interferes with tau aggregation and amyloid-beta oligomerization, relevant for protein misfolding research.
• Photosensitizer: Generates singlet oxygen under specific wavelengths, supporting photodynamic and antimicrobial photoinactivation studies.

Research Studies and Applications

Methylene blue is a standard reference compound in mitochondrial bioenergetics. It consistently increases oxygen consumption rates and restores membrane potential in cells treated with Complex I or III inhibitors, commonly used in Seahorse XF and Clark electrode experiments.

Neuroprotection research has gained momentum, with studies showing methylene blue reduces oxidative stress markers, preserves mitochondrial function under stress, and modulates autophagy. It inhibits paired helical filament formation at micromolar concentrations in vitro, making it valuable in Alzheimer’s disease research.

In redox biology, methylene blue serves both as a probe for cellular redox status and as an active modulator. Its ability to cycle between oxidized and reduced forms allows study of electron transfer kinetics and NADH/NAD⁺ ratios.

Its absorption in the 600–700 nm range and efficient singlet oxygen generation make it practical for photodynamic antimicrobial inactivation against bacteria, fungi, and viruses.

Storage and Safety Guidelines

• Store methylene blue capsules at room temperature (15–25°C) in a dry, light-protected area.
• The compound is hygroscopic and photosensitive; keep containers sealed when not in use.
• Methylene blue stains skin, gloves, lab coats, and surfaces. Always wear gloves and eye protection.
• Work in a well-ventilated area and follow your institution’s chemical hygiene protocols.
• Dispose of waste according to local regulations.

Why Buy Methylene Blue Capsules from Loti Labs?

• Analytical Verification: Third-party HPLC and mass spectrometry confirm identity and ≥98% purity.
• Light-Protected Packaging: Prevents photodegradation during storage and shipping.
• Research Documentation: Full certificates of analysis included.
• Batch Consistency: Reliable lot-to-lot quality for reproducible results.

Product Disclaimer

All Loti Labs products, including methylene blue capsules, are for research use only. They are not dietary supplements, therapeutics, or for human or veterinary use. This designation ensures regulatory compliance and supports legitimate scientific research.

Shipping Policy and Guarantee

• Orders placed before 1pm EST Monday-Friday ship same day; orders after 1pm or on weekends ship next business day.
• Packaging is light-shielded with tracking on every shipment.
• 30-Day Money Back Guarantee on unopened products for quality issues, shipping damage, or change of mind.

References

1. Rojas, J.C., Bruchey, A.K., Gonzalez-Lima, F. Neurometabolic mechanisms for memory enhancement and neuroprotection of methylene blue. Prog Neurobiol. 2012;96(1):32-45. doi: 10.1016/j.pneurobio.2011.10.007
2. Atamna, H., Nguyen, A., Schultz, C., et al. Methylene blue delays cellular senescence and enhances key mitochondrial biochemical pathways. FASEB J. 2008;22(3):703-712. doi: 10.1096/fj.07-9610com
3. Wainwright, M., Crossley, K.B. Methylene blue — a therapeutic dye for all seasons? J Chemother. 2002;14(5):431-443. doi: 10.1179/joc.2002.14.5.431
4. Schirmer, R.H., Adler, H., Pickhardt, M., Mandelkow, E. Lest we forget you — methylene blue. Neurobiol Aging. 2011;32(12):2325.e7-2325.e16. doi: 10.1016/j.neurobiolaging.2010.12.012
5. Tucker, D., Lu, Y., Zhang, Q. From mitochondrial function to neuroprotection — an emerging role for methylene blue. Mol Neurobiol. 2018;55(6):5137-5153. doi: 10.1007/s12035-017-0712-2
6. Oz, M., Lorke, D.E., Petroianu, G.A. Methylene blue and Alzheimer’s disease. Biochem Pharmacol. 2009;78(8):927-932. doi: 10.1016/j.bcp.2009.04.034
7. Wen, Y., Li, W., Poteet, E.C., et al. Alternative mitochondrial electron transfer as a novel strategy for neuroprotection. J Biol Chem. 2011;286(18):16504-16515. doi: 10.1074/jbc.M110.208447
8. Tardivo, J.P., Del Giglio, A., de Oliveira, C.S., et al. Methylene blue in photodynamic therapy: from basic mechanisms to clinical applications. Photodiagnosis Photodyn Ther. 2005;2(3):175-191. doi: 10.1016/S1572-1000(05)00097-9
9. Poteet, E., Winters, A., Yan, L.J., et al. Neuroprotective actions of methylene blue and its derivatives. PLoS One. 2012;7(10):e48279. doi: 10.1371/journal.pone.0048279
10. Stack, C., Jainuddin, S., Elipenahli, C., et al. Methylene blue upregulates Nrf2/ARE genes and prevents tau-related neurotoxicity. Hum Mol Genet. 2014;23(14):3716-3732. doi: 10.1093/hmg/ddu080