Transient light-headedness, dizziness, or nausea can occur, especially with high or rapidly infused doses
For drinking water specifically, total coliform and E
Because we see people getting their 503B vials from a vendor on Instagram or Telegram in an unlabeled bag with no quality control, dose amount or sterility issues
When injectable delivery is the more logical choice: The target is systemic (GH pulse stimulation, tissue repair at non-GI sites, systemic inflammation)
Patients receiving b12 for pernicious anemia, neurological conditions, or documented deficiency do not report nausea improvement unless their nausea stemmed from the deficiency itself
What is missing: in-person evaluation, comprehensive lab work, hands-on injection training