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A member asked:
Vitamin b12 injection - what size hyperdermic needle should i use?
A doctor has provided 1 answer
The pharmacy has it: For intramuscular injection the thinnest needle that will not clog is about a 22 guage. You can also take B12 liquid under the tongue (need to hold it there for 30 seconds) or take little pills that dissolve under the tongue.
Answered 2/22/2016
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