intramuscular b12 injections Ivy Grove Surgery : Self-administration of injection How to Inject Vitamin B12

Here is how they relate: 1mg = 1,000mcg (milligrams to micrograms) 1mL = 100 units (on a U-100 insulin syringe) Units to draw = (Dose in mg / Concentration in mg per mL) x 100 Or equivalently: Units to draw = Dose in mcg / (Concentration in mcg per mL / 100) Some researchers find it easier to work entirely in micrograms because it eliminates decimals

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Inject slowly down the vials inner wall to limit foaming avoid vigorous shaking

For a 20 mg vial, achieving 10 mg/mL concentration needs 2.0 mL of water

Freezing may compromise benzyl alcohol concentration and vial integrity