severe pain after b12 injection Why do I feel worse a injection? How Much Do B12 Injections

Several factors can influence how quickly youll experience benefits: Initial B12 Levels Those with severe deficiencies may notice more dramatic and rapid improvements compared to those with mild deficiencies

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Including your provider's arrival, health screening, IV setup, and cleanup, the total visit usually runs about 45 minutes to one hour

AI DiagMe helps translate lab numbers into clear explanations and next-step suggestions, so you can discuss results more confidently with your clinician.

In milder or borderline cases, high-dose oral vitamin B12 may be sufficient, depending on absorption and clinical context