[DOI] [PubMed] [Google Scholar] 71.Lofgren P, Hoffstedt J, Naslund E, Wiren M, Arner P
Taking your daily dose of health-promoting vitamins, especially vitamin C and B vitamins like fitness enthusiasts' beloved vitamin B12, is becoming an integral part of many people's day-to-day routine
Better for Severe Deficiencies: If someone has a significant B12 deficiency, oral supplements may not be enough to bring levels back up quickly
Factors that Affect How Long Vitamin B12 Shots Stay In the Body No Vitamin B12 Deficiency If you dont have a vitamin B12 deficiency, most of the vitamin B12 you get through your injection will be absorbed and eliminated quickly through your urine
Improvements in symptoms can be expected within 2 weeks but may take up to three months, especially for diet-related deficiencies