b12 im injection needle size Can't we just use a smaller and do it in my skin?" π€ I get this question ALL the time, so let's talk about it β as your nurse. π©ββοΈ Subcutaneous Cyanocobalamin Injection β 1000 Size:1000 mcg/ml - 10 ml x 3 vitamin B1 B6 B12 injection
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