feeling exhausted after b12 injection tired, foggy, or run-down? It could be a B12 deficiency Feeling worse after B12 Injection:
Description
More substantial improvements, if they occur, generally become apparent between months four and six
An EOB is not a bill
Even though many NSAIDs are available over the counter, they can have side effects such as stomach ulcers and kidney dysfunction

I am an attorney and this affected my work
Supports Recovery: Aids in recovery during periods of stress, illness, or convalescence

The NHS treatment page lays it out clearly: Loading phase (no neurological symptoms): 1mg every other day for two weeks, or until symptoms stop improving
