Commercial cyano B12 exists because, when making hydroxo B12 from bacteria, some of the cobalamin binds to cyanide during the charcoal filtration process
Benefits of Immune Support Glutathione Dietary supplement Health Optimal Supplement Antioxidant Protection: Free Radical Neutralization: Optimal Liposomal Glutathione Plus is a powerful antioxidant that neutralizes free radicals, protecting cells from oxidative stress and damage

Ingredients: Water/Aqua/Eau, Propanediol, Squalane, Hydrogenated Polyisobutene, S-Palmitoylglutathione, Dimethicone, Glycerin, Macadamia Ternifolia Seed Oil, Xylitylglucoside, Tetrahexyldecyl Ascorbate, Dimethyl MEA, Palmitoyl Tripeptide-5, Acetyl Hexapeptide-8, Anhydroxylitol, Lactic Acid, Xylitol, Xanthan Gum, Linum Usitatissimum (Linseed) Seed Oil, Salvia Hispanica Seed Oil, Tocopherol, Ethylhexylglycerin, Magnesium Aspartate, Zinc Gluconate, Alaria Esculenta Extract, Glucose, Sodium Hyaluronate, Copper Gluconate, Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate, Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine, Helianthus Annuus (Sunflower) Seed Oil, Rosmarinus Officinalis (Rosemary) Leaf Extract, Tetrasodium Glutamate Diacetate, Magnesium Chloride, Caprylic/Capric Triglyceride, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Caprylyl/Capryl Glucoside, Caprylyl Glycol, Potassium Sorbate, Phenoxyethanol, Fragrance/Parfum, Citronellol, Hydroxycitronellal, Limonene, Linalool

Lower starting points (around 1 mg/day) are typical for new research planning, and 2 mg/day is the high end most references cite