how do you feel after vitamin b12 injection to Give Injections at Home to Yourself · PA Relief Why Do I Feel Worse

Yes, you can give yourself vitamin B12 injections if youre trained and know how

Common examples include fatigue or low energy with normal blood results, brain fog or reduced concentration without confirmed vitamin B12 deficiency, stress-related exhaustion or burnout, increased metabolic demand such as during illness recovery, high workload, or intense training, restrictive or inconsistent dietary intake, or suspected poor oral absorption despite normal serum levels

Nature, 569(7758), 723-728 (2019-05-03) DOI:10.1038/s41586-019-1173-8 [4]

Below is a table comparing them: Clinical Evidence for Ranitidine-B12 Interactions Research on ranitidine and vitamin B12 shows mixed results

it is not medical advice , not a dosing recommendation, and AHK-Cu is not approved by the FDA for any use