b12 injection im vs sq SubQ Injections Vitamin B12 Injection Methods: Choosing

For example, vitamin B12 shots for weight loss are typically administered weekly, or twice a week for fat-burning and boosting metabolism

For really bad cases, you might need more, and shots are given once a week, or as the doctor says

B12 injections work faster than oral supplements of B12 and therefore, are recommended for individuals who need quick improvement

Keeping your energy metabolism running efficiently

Based on a review of your health history, bloodwork, symptoms, and injection response, we may recommend: Increasing your dosage at each shot

Usefulness of oral vitamin B12 therapy in vitamin B12 deficiency related to foodcobalamin malabsorption: Short and longterm outcome [1]