can b12 injections cause insomnia The independent association between vitamin B12 and insomnia in Chinese patients with type 2 diabetes mellitus: a cross-sectional study Vitamins and insomnia: Correlation and

Vitamin B12 injections usually dont cause side effects for most people

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Vitamin B12 in Pregnancy Importance, Supplementation & Food Sources This health content has been medically reviewed by qualified experts and follows the FirstCry Parenting editorial policy to ensure accuracy and reliability

Some providers may periodically measure basic labs (like liver/kidney function or copper levels) during extended treatment, especially if higher doses are used

However, serious side effects such as allergic reactions or heart failure in individuals with heart disease are rare but possible

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