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Pull back the syringe plunger to fill the barrel with air equal to the amount of water you plan to draw
On a standard insulin syringe, this is approximately 0.007-0.012mL (roughly 1 unit)
Administered through an injection, this vitamin is absorbed directly into the bloodstream for faster, more efficient results
As with any injectable, theres also a small risk of infection if the injection technique is not sterile
British Journal of Pharmacology / NIHMS PMC (2008) 6
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