Regardless of the causes of your deficiency, these are a few things you should understand as it pertains to choosing a B12 shot over drops (or vice-versa)
Liver health improves dramatically
A vegetarian or vegan diet can see Vitamin B12 levels drop Long-term use of antibiotics, peptic ulcer treatments and some diabetes medication can reduce levels of B2, B9, and B12
Vitamin B12 can only be found in animal products, such as eggs, dairy, fish, milk, and red meat
Can peptide stacks cause long-term health issues
According to an older 2013 review of research, they may have lipotropic effects in rodents: Very limited research exists on the efficacy, safety, and lipotropic properties of the ingredients used in these injections for weight loss