They will change the dosage and how often you get shots based on how your body reacts and your health changes
Cyanide Poisoning Management: Hydroxocobalamin, the active ingredient in B-Colamin, is also used as an antidote for cyanide poisoning
doi:10.1186/s12891-017-1571-8 , 11 Schneider B, Varghis N, Kennedy DJ
Skin Reactions Skin reactions that may occur following a vitamin B12 shot include flushing of the skin, (especially the face), as well as hives, rashes, and itching
De PalmaGBlennerhassettPLuJDengYParkAJGreenWet al
Understanding tirzepatide with B12 Some providers may prescribe tirzepatide with vitamin B12 to possibly help reduce fatigue, support nerve function, and prevent vitamin B12 deficiency that may occur with long-term use of GLP-1 medications