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This can be done through injections of vitamin B12 or through the use of oral supplements
sold as a research chemical, not for human consumption
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
Quality: Its also best to choose a product that has been third-party tested, as this ensures that it has been tested for heavy metals, contaminants, and accuracy of the label
Active Ingredients: Cyanocobalamin 1000 mcg/mL
