Stefani (she/her) is a registered dietitian, a NASM-certified personal trainer and the director of the Good Housekeeping Institute Nutrition and Fitness Lab, where she oversees all nutrition and fitness-related content, testing and evaluation
Signs of Correct Administration A successful B12 injection should cause: Minimal pain at the site A small bump that fades within an hour Mild redness or soreness that resolves within 24 hours If symptoms worsen (swelling, pain, fever, rash), consult a doctor immediately
Several factors influence the choice of needle and syringe: Type of injection : Intramuscular (IM) or subcutaneous (SC) Gauge of the needle : Diameter of the needle Length of the needle : Determines the depth of injection Volume of the syringe : Determines the amount of B12 to be injected 3
For oral administration only
This is exactly the kind of mistake that catches people off guard when they switch concentrations without recalculating their draw volume