side effects from b12 injection Vitamin and Safety Oral Vitamin B12 Side Effects
Description
Patients taking GLP-1 drugs lose weight faster, but they may experience side effects, such as nausea, vomiting, diarrhea, indigestion, fatigue, dizziness, and hypoglycemia, along with other potential adverse events

[DOI] [PubMed] [Google Scholar] 31.Sukla KK, Tiwari PK, Kumar A, Raman R
This could be due to racial differences in B12 metabolism, or in environmental factors, most obviously diet (B12 intake)

While many individuals experience benefits within hours or days of receiving an injection, the full spectrum of advantages may unfold over several weeks
