how to inject b12 shot at home give yourself a How to Give a B12

While theres not a ton of medical research on this, some studies show that bromelain or Arnica is useful after an injection

Further, NICE and the BNF says that if there are neurological symptoms present, then every other day injections are the recommended treatment, so all the points you make about B12 being stored and sufficient are not really relevant

Symptoms of a hangover can include: Headaches Fatigue Excessive thirst Poor or decreased sleep Sensitivity to light and sound Dizziness Shakiness Changes in mood Decreased ability to concentrate Stomach pain Many symptoms of a hangover are symptoms of dehydration

In the UK, patients get four shots a year

It is best to rest for a few hours and avoid any high impact activity