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can you overdose with b12 injections Consequences of Excess or Deficiency of Vitamin Sublingual B12 vs. B12 Injections:
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For acute flares of gout, it is key to treat as quickly as possible and choosing a medication least likely to cause side effects, with special attention to individual comorbidities

There is no one-size-fits-all schedule
The thread on tests for PA and B12 deficiency mentions other tests that can help to diagnose PA eg gastrin test and others (link in my other reply) Forum Support in reply to When you were tested for coeliac disease
Do not adjust injection frequency without speaking with a licensed healthcare provider
