If you don't get enough vitamin B12, you might experience adverse side effects like numbness, tingling, and canker sores
Those pinchable areas are your injection sites
If you're adding a B12 shot to another service (IV therapy, a medical facial, Botox or Xeomin injections, lip filler, microneedling, or laser hair removal), there's no extra time added
Contact your provider if you experience intractable vomiting (unable to keep down fluids for more than 24 hours), severe abdominal pain (particularly if constant or radiating to the back), or signs of dehydration including decreased urination, extreme thirst, dizziness, or confusion
Detoxication reactions of glutathione and glutathione transferases [PMID: 3541402] Laboratory literature summary: Detoxication reactions of glutathione and glutathione transferases