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b12 injection cause headache Headaches After Vitamin Shots: Causes & Solutions Discover the Life-Giving Power of
Description
Most studies have focused on short term safety and effectiveness

B12 is also critical for DNA synthesis, helping create and repair cells
Rastegar M, Mumivand H, Rezaeinejad A, Shayganefar A, Author C

Pens have built-in dosing dials and disposable pen needles (usually similar short gauges, 48 mm length)
Healthline recommends foods rich in vitamin B12, including beef, eggs, dairy, and fortified cereals

Oct 15 2017;45(5):1105-1115
