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Knowing about the safety and possible side effects of vitamin B12 injections helps doctors give safe and effective treatment to those who need it
So, if you can find 4 mm or 5 mm needles, we recommend using them
Compared to other types, IM needles are usually longer and thicker
If vitamin B12 injections are not suitable or necessary for your situation, alternative supplementation methods such as oral supplements or patches may be recommended by your healthcare professional
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