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How to Give a Vitamin B12 Shot Vitamin B12 is an essential nutrient required for healthy nerve function, red blood cell formation, and DNA synthesis
We found no significant difference among studied administrated routes in all other CBC parameters such as Hb, MCV, platelets count, WBC count, and homocysteine level
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The most commonly reported anecdotal effects are mild and local: injection-site irritation, redness, or bruising, along with occasional fatigue, nausea, headache, or dizziness
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