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extreme fatigue after b12 injection Why do I feel worse a injection: causes explained Feeling worse after B12 Injection:
Description
Therefore, it is important to inform your healthcare provider of any dietary restrictions or allergies that you may have before starting this medication
8-12 weeks 2 10 mL bottles 8 weeks: Uses 12 mL across the cycle

Then, keep up with injections every 1-3 months

refrigeration at 4 C (39 F) is acceptable for short-term storage (days to weeks)
