doctor won't give me b12 injection Will a Vitamin More Energy? Vitamin B12 A Vitamin B12

However, high doses of vitamin B12, such as those used to treat a deficiency, might cause: Headache Nausea and vomiting Diarrhea Fatigue or weakness Its important to note that these side effects are generally mild and temporary

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One common question that arises is, "How long do the benefits of a vitamin B12 injection last?" The answer can vary from person to person based on factors such as metabolism, overall health, and the severity of B12 deficiency

Boost Hair Growth or Prevent Hair Loss : Vitamin B12 is essential for cell production and growth, including hair cells