A vitamin B12 injection delivers the vitamin directly into your muscle
Boosting Immune Health Taking regular vitamin B12 injections for weight loss may also support immune function, particularly in individuals with a deficiency, as observed in clinical studies on B12 and immune health

NICE-recommended weight management strategies include: Dietary intervention aiming for a 600 kcal/day deficit through reduced portion sizes, limiting energy-dense foods, and increasing fruit and vegetable consumption Physical activity building up to 150300 minutes of moderate-intensity aerobic activity weekly, plus muscle-strengthening activities on at least two days weekly, in line with UK Chief Medical Officers' guidelines [10] Behavioural approaches including self-monitoring, goal-setting, and addressing emotional eating patterns Commercial weight management programmes such as those meeting NICE quality standards (QS127) Very-low-calorie diets in specific circumstances, under clinical supervision and for limited periods For patients with a BMI 30 kg/m (or 27.5 kg/m in those of South Asian, Chinese, or other Asian family origin) who have not achieved adequate weight loss through lifestyle measures alone, pharmacological interventions may be considered

Baltimore, Md.: Lippincott Williams & Wilkins
Injections require visits
Using a compound from an unvetted source introduces risks that are simply not worth taking