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The deltoid muscle is often used for smaller injection volumes
Yonsei Med
How Long Does Liquid B12 Take to Work
Maintenance dosing schedules: Weekly injections for the first few months Bi-weekly or monthly injections after that Adjusting Frequency Based on Clinical Response The B12 injection schedule might need to change based on how well the treatment works
Common Side Effects: Injectionsite reactions (most common): Mildtomoderate redness, itching, or transient discomfort at injection site
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