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Where to inject B12 Where you self-inject B12 is a matter of personal choice
To inject IM, hold the skin firmly between your thumb and index finger
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A syringe that is too large for a small dose can be difficult to control, while a syringe that is too small for a large dose may require multiple injections, causing unnecessary discomfort
Furthermore, as the vials of this Pfizer bacteriostatic water for injection, USP have self-sealing plastic tops, the pores in these lids close every time the solution is extracted to keep the solution free from environmental contamination
After drawing, tap the barrel firmly while holding it needle-up to float bubbles to the top
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