is there a shortage of b12 injections Patients self-injecting vitamin without telling their GP, finds study B12 Injection Dose for Adults:

Its also important to eat at regular intervals, as too long without eating sends your body into fat-storage mode

They provide a relaxing experience and typically administer B12 as a wellness service, meaning you dont need a prior prescription to get started

The relative abundance of Erysipelatoclostridium was increased in vehicle-treated mice that underwent the WD to LD switch (WD/LD-V) relative to the two control groups (LD/LD-V and WD/WD-V) but was not increased in 5A-1MQ-treated mice that underwent the same diet switch (WD/LD-T)

However, compliance and absorption variability mean injectable therapy remains preferred for confirmed deficiency in elderly patients