A deficiency can occur if you follow a vegan diet, dont consume enough B12-rich foods, or if you have conditions like pernicious anemia, which impair absorption
When taken at the recommended dose of 200mg (1ml) twice per week , the supply is designed to last approximately 10 weeks
Vitamin B12: Why we need it, where we get it, and what it does Vitamin B12, also known as cobalamin, is an essential nutrient that is needed for DNA synthesis, red blood cell formation, nerve function, cellular energy, and homocysteine metabolism
[DOI] [PubMed] [Google Scholar] 259.Pitman S.K., Huynh T., Bjarnason T.A., An J., Malkhaysan K.A
Multiple Endocrine Neoplasia Syndrome Type 2 (MEN2): Avoid Semaglutide if you have MEN2