b12 injection fsa eligible 44e3d01c-b12-injection_108w08w08w06q000013028.png Vitamin B12 shots are injections
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You must not double the dosage of the prescription to make up for the missed dosage
Local administration of methylcobalamin for subacute ophthalmic herpetic neuralgia: a randomized, phase III clinical trial

[1] mhra.gov.uk or via the Yellow Card app)

Figure 10
