No. B12 injections are meant to support energy and deficiency correction, and any weight loss usually comes from your overall plan—nutrition, activity, and other treatments—not from the shots by themselves.
Schedules vary, but many medically supervised programs start with more frequent injections (for example, weekly) and then move to maintenance visits based on your response and lab results.
Standard B12 shots contain only vitamin B12, while MIC and lipotropic injections add amino acids and other compounds aimed at supporting fat metabolism and energy during a calorie deficit.
Some telehealth programs ship pharmacy‑compounded B12 or MIC plus B12 kits with instructions for self‑injection, but you still need a prescription and ongoing guidance from a licensed clinician.
Most people tolerate B12 injections well, but they are not right for everyone, especially if you have certain medical conditions or a history of reactions, so a clinician should review your history and labs before starting.

Find more details about B12 Injections.