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this list is not exhaustive Antacids Colchicine (treatment of gout) H2 Blockers (Zantac, Tagamet, Pepcid) Metformin Diabetes drug (Glucophage) PPIs Proton pump inhibitors (Omeprazole, Nexium, Prevacid, Protonix) Nitrous oxide anaesthesia Nitrous oxide recreational abuse (Laughing gas / Whippets / Hippy crack) Mycifradin sulphate (Neomycin) antibiotic Para aminosalicylates antibiotic Phenytoin (Dilantin) anti-epileptic Potassium chloride (K-Dur) Cholestyramine (Questran) Chemotherapy and radiation treatment Increased demands Chronic Hemoltic anaemia Hyperthroidism Multiple myeloma Myelopproliferative disorders Neoplasms Pregnancy Some patients may never find out the cause of their condition, this does not mean that they should be denied B12 injections which are, safe, inexpensive and the most efficient treatment for their deficiency

However, it's always wise to consult with a healthcare professional before starting any new supplement regimen, especially if you have pre-existing medical conditions or take medications

The inclusion of benzyl alcohol (at 0.9%) imparts an antimicrobial effect by inhibiting bacterial growth and reproduction in the water

Think of it as helping your cells keep the lights on, so youre less likely to feel like your brain is running on low battery halfway through the day

References 1 TakeshimaTUsuiKMoriKAsaiTYasudaKKurodaSet al