While the shots arent necessarily dangerous, theres no surety that theyll help you lose weight, either
If you opt for this one, you wont be getting nearly as much B12 as you think you are, because it will pass straight through your system with little absorption
The Food and Nutrition Board has not established a Tolerable Upper Intake Level (UL) for vitamin B12 because of its low toxicity potential
Rodent (diet-induced obesity, 28 days) Babula et al
Elevated NNMT activity has been associated with increased fat accumulation, reduced metabolic efficiency, and impaired cellular energy production
For patients with a diagnosed deficiency, B12 injections may be given daily or weekly during the initial correction phase, then monthly for maintenance