VITAMIN B12 SHOTS: You may have hit a nerve in the arm. The chances are the numbness will disappear. But if you are concerned, see a doctor.
Answered 1/14/2019
6.1k views
Vitamin B12 shots: Varying the location for giving the shot would be a good idea. I usually give these shots in the front of the thigh. There are large muscles here and little risk of damaging a nerve. I also alternate sides so each leg gets a break.
Answered 3/11/2012
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