Therapeutic Advances in Gastroenterology
Vitamin B12 Injections However, some people have trouble absorbing vitamin B12 from their food, leading to deficiencies that can cause headaches, pale skin, fatigue, and even eventually infertility
2.5 mg = 0.5 mL = 50 units 5 mg = 1.0 mL = 100 units (a full 1 mL U-100 syringe) 7.5 mg = 1.5 mL = 150 units (needs two draws on a 1 mL syringe) 10 mg = 2.0 mL = 200 units 12.5 mg = 2.5 mL = 250 units When to re-check the math Recalculate when you change vial size, BAC water volume, dose, syringe type, or syringe capacity
Tabrizi R, Vakili S, Akbari M, Mirhosseini N, Lankarani KB, Rahimi M, et al