vitamin c and b12 injection together Folic Acid Niacinamide Injection, 20 Combo Pack, 40mg Compounded Ascorbic Acid (Vitamin C)
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Discover common reasons behind these symptoms

[DOI] [PMC free article] [PubMed] [Google Scholar] 234.Yoshino, J
Consult with your doctor and adjust dosages accordingly

The study also opens the door for more future research about the administration routes of vitamin B12 and other vitamins

Taking both supplements together is generally safe but may result in excessive intake of B6 or niacin, which can cause adverse effects