SAM is additionally required for phosphatidylcholine synthesis, which is abundant in neuronal membranes and is crucial for synaptogenesis and neurite outgrowth ( Vitamin B12 is a cofactor for the enzyme methylmalonyl-CoA mutase, which converts methylmalonyl-CoA to succinyl-CoA, a crucial step in fatty acid metabolism (73)

Pre-Use Checklist Before using any B12 nasal spray: Talk to your healthcare provider if you have: Lebers hereditary optic neuropathy A known allergy to cobalt or B12 (cyanocobalamin or methylcobalamin) History of severe megaloblastic anemia, polycythemia vera, or bone marrow disorders Low iron or folate, significant kidney issues, or are on chemotherapy agents Persistent nasal congestion, chronic sinus issues, or recurrent upper respiratory infections Review your medications and supplements , especially: Chloramphenicol Omeprazole and other PPIs Aminosalicylic acid Colchicine Bone marrowsuppressing drugs Step-By-Step Administration For best results with a methyl b12 nasal spray such as Synchronicity Healths formula: Avoid hot food and drinks Do not eat or drink hot liquids for at least 1 hour before and 1 hour after using the spray
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State Reconstituted (from powder) Storage 35.6-46.4F (2-8C) Notes Typical 14-30 day window depending on compounder guidance