side effects of a vitamin b12 injection What Are Shots? 5 Benefits and what are the side effects

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Herrmann W, Obeid R

On a standard 100-unit insulin syringe, 1 mL equals 100 units, so: 250 mcg dose = 10 units on the syringe 300 mcg dose = 12 units 500 mcg dose = 20 units Your prescribing physician or pharmacy will provide the exact calculation for your specific vial concentration and prescribed dose

Potential Side Effects While Vitamin B12 injections are generally safe, some people may experience mild side effects, including: Pain or redness at the injection site Mild diarrhea Itching or rash Headache Dizziness Severe allergic reactions are rare but require immediate medical attention