Your doctor will consider factors like your current B12 levels, weight, age, and health goals
Endocrinology 153 , 21982207 (2012)
MedlinePlus: B Vitamins NCBI: Statpearls: Vitamin B12 Deficiency (Cobalamin) Cochrane Database of Systematic Reviews: Progesterone or ProgestogenReleasing Intrauterine Systems for Heavy Menstrual Bleeding ScienceDirect: Medicine: Iron, Vitamin B12 and Folate Pernicious Anaemia Society: Symptoms of Pernicious Anaemia Journal of Human Nutrition and Dietetics: Avoidance of Meat and Poultry Decreases Intakes of Omega-3 Fatty Acids, Vitamin B12, Selenium and Zinc in Young Women EBSCO Publishing: Dysmenorrhea Medical News Today: Everything You Need to Know About Vitamin B-12 National Institutes of Health Office of Dietary Supplements: Vitamin B12 Penn State Hershey: Milton S
B12 Shot Supplies: What Do You Need
Here are some key considerations: Allergic Reactions : If you have a history of allergic reactions to cobalt, cyanocobalamin, or any other ingredients in the injection, inform your healthcare provider before starting treatment
