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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
The duration of a B12 shot's effects can vary depending on individual health, frequency of administration, and the body's needs
Final Thoughts So, where does that leave the question of how long a B12 shot lasts
But, some might feel: Pain, redness, or swelling at the injection site Mild diarrhea or itching Headaches or fatigue These issues are usually mild and go away quickly without needing a doctor
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