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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How To Self-inject B12?

I need to self-inject B12. I was told sub q in your arm , but that s impossible. I have read that I can inject it into my buttocks, or my arm, or my thigh. Are these injection sites correct, and if it s sub q wouldn t the fat part of the butt be the simplest? Easy to reach, etc.
posted on Fri, 14 Mar 2014
Twitter Sun, 3 May 2020 Answered on
Twitter Fri, 8 May 2020 Last reviewed on
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General & Family Physician,  's  Response
Hello,

Yes all the injection sites are correct. But thigh is better site for self injection. Thigh:

Specifically, the muscle injected is known as the vastus lateralis muscle. The thigh is a strong muscle appropriate for vitamin B-12 injections, and it is most appropriate for newborns and infants because it is one of the most developed muscles in youth.

The thigh can also be appropriate for adults because it's so easy to self-administer injections there. The needle is usually 2.5 centimeters in length and is inserted at a 90-degree angle.

Hope I have answered your query. Let me know if I can assist you further.

Take care

Regards,
Dr. Arup Majumdar
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How To Self-inject B12?

Hello, Yes all the injection sites are correct. But thigh is better site for self injection. Thigh: Specifically, the muscle injected is known as the vastus lateralis muscle. The thigh is a strong muscle appropriate for vitamin B-12 injections, and it is most appropriate for newborns and infants because it is one of the most developed muscles in youth. The thigh can also be appropriate for adults because it s so easy to self-administer injections there. The needle is usually 2.5 centimeters in length and is inserted at a 90-degree angle. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr. Arup Majumdar