how long does b12 injection last in the body Dosage and Frequency: 7 Guidelines for Adults How Long Does a B12

We recommend one injection once a week for 3 months and then once monthly

Headache support Hydration + nutrient support when appropriate

Common side effects include injection site reactions, gastrointestinal disturbances, headache, and chromaturia

Prolonged maintenance: Prolonged Maintenance-Picture Courtesy: Beauty Worx Aesthetics When you witness the low levels of cobalamin in cats, after withdrawal of vitamin b12 injection therapy, this indicates that your cat needs prolonged maintenance by administering dose every 2-4 weeks

If the patient is known to have low potassium or heart rhythm issues, monitor electrolytes

Side effects are minimal and typically include mild soreness at the injection site