Advertisement - Continue Reading Below How we chose the best vitamin B12 supplements We consulted nutrition experts Jessica Cording, M.S., R.D., author of The Little Book of Game-Changers , Keri Gans, M.S., R.D., author of The Small Change Diet , Stephanie Gray, D.N.P., M.S., A.R.N.P., a doctorally prepared functional medicine nurse practitioner and owner of Integrative Health and Hormone Clinic in Hiawatha, IA, and Elizabeth Somer, M.S., R.D.N., a dietitian based in Salem, OR and a medical advisory board member for Persona Nutrition

Serious side effects of the medication include the following: Allergic or hypersensitivity reaction Severe gastrointestinal issues Changes in mood and behavior Pancreatitis Liver problems Low blood sugar levels (hypoglycemia) Cardiac arrhythmias Suicidal ideation Major depressive disorder No adverse event of hypoglycemia or thyroid cancer was reported in Phase II trials, and 7% of retatrutide participants had skin sensitivity, compared to 1% on placebo, but these cases were not serious
What do B12 infusions do
The belief that B12 injections provide a long-term store that renders a day or twos difference insignificant is a significant and persistent misconception