headaches b12 injections Headache After Shot: Why It Happens & What to Do Vitamin B12 Injection: Energy Boost
Description
Can be done up to 1x per week or 1x per month but is recommended to consult with a provider on your individualized schedule
Last updated on Mar 24, 2026
High doses of vitamin B12 can lead to severe diarrhoea and intense stomach cramps in elderly people or people who have a history of gastrointestinal issues
If you find yourself experiencing a deficiency, consult with your healthcare provider for corrective intervention
Athletic and high-performance patients usually do weekly during training peaks and monthly during off-cycles
