Nitrous oxide, a commonly used anesthetic, oxidizes and inactivates vitamin B 12 , thus inhibiting both of the vitamin B 12 -dependent enzymes, and can produce many of the clinical features of vitamin B 12 deficiency, such as megaloblastic anemia and neuropathy
doi:10.1210/jc.2019-01132 Tsai SH, Stoller ML, Sherer BA, Chao ZH, Tung TH
Each vial comes with a batch-specific Certificate of Analysis, refrigerated 28 C dispatch from a British facility, and clear "for laboratory research only, not for human use" labelling consistent with MHRA's medicinal products framework [4][5]
Treatment: To treat seborrheic dermatitis, talk to your dermatologist, who can provide solutions and may suggest using a dandruff shampoo