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Initial response time also depends on: Severity of the B12 deficiency Frequency of injections Underlying health conditions Absorption and metabolism differences If youre getting your first B12 shot, your provider may start you on a more aggressive schedule, such as weekly injections until your levels are normalized
B12 Shots & B12 Injections: Navigating the Ups, Downs, and What to Do When Feeling Tired After B12 Shot
Blood vessel changes B12 may widen blood vessels, causing mild headaches
These come as clear, colorless to slightly yellow solutions in single-dose prefilled pens
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