To view a copy of this license, visit About this article Cite this article Wharton, S., Astrup, A., Endahl, L
Typically, B12 injections begin working immediately and the body will begin making new red blood cells within 72 hours
Call Your Provider Promptly For Severe abdominal pain (possible pancreatitis) Persistent vomiting that prevents fluid intake Right-upper-quadrant pain that radiates to the back or shoulder (possible gallbladder issue) Sudden vision changes (rare, but reported) Symptoms of severe dehydration: dizziness on standing, dark urine, dry mouth For a deeper dive on what to expect over time, our side effect timeline guide walks through duration and management for each common issue
Even though B12 shots are appropriate for use in those who are low or deficient in this vitamin, theres no evidence that B12 shots offer any benefits for people with optimal B12 levels.
Related Link: IV Therapy Benefits: What to Know for Your Health