The most common side effects of B12 shots are minor and typically localized to the injection site
There are no reports of significant hormonal disruption, no blood sugar effects, and no serious adverse events attributable to the peptide
When results show, and how long they last: Many feel a lift within 2472 hours, while others notice gradual improvement over one to two weeks
Unlike some vitamins, B12 is absorbed through the digestive system, which means some people struggle to absorb enough from food alone
Metformin-induced vitamin B12 deficiency can cause or worsen distal symmetrical, autonomic and cardiac neuropathy in the patient with diabetes
Factors such as the form of B12 used, additional ingredients, and manufacturing standards should be considered