b12 lozenges vs injections Are Vitamin Shots Right for You? Should I get B12 injection

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Knowledge in this respect is important since oral administration should provide these patients with greater autonomy, improve patient satisfaction with treatment, and reduce treatment costs

[11] [20] Patients should not adjust doses independently but may discuss timing strategies with their healthcare provider

defined primary cerebral folate deficiency as a neurological syndrome associated with normal levels of extraneurological folate but reduced levels of 5-methyltetrahydrofolate (5MTHF), a folate metabolite in cerebrospinal fluid [101]

This is why it's so important to listen to your body and communicate with your doctor