Insider's takeaway The Institute of Medicine has not established a tolerable upper intake level of B12 because studies show no adverse health effects when taking excess levels of B12, either through food or supplements
Weight loss : In astudyof 175 participants with overweight or obesity, those taking semaglutide lost 5.9% of their body weight at 3 months and 10.9% at 6 months
Cyanocobalamin injections are often prescribed to gastric bypass patients who have had part of their small intestine bypassed, making it difficult for B 12 to be acquired via food or vitamins
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Vitamin B12, Mayo Clinic, Vitamin B12, Fact Sheet for Consumers, National Institutes of Health, Office of Dietary Supplements, Pernicious anemia, Cleveland Clinic, Ganipisetti VM, Naha S
Form Lyophilized vial (short-term) Temperature 35.6 to 46.4 F (2 to 8 C) Note Acceptable for short transit and short holds