Side effects are usually minor, but if your ankles start to swell or you have an allergic reaction or trouble breathing, call your doctor
Many patients come in just for B12 without any other treatment
These are common signs people bring up when they ask us about B12: Ongoing tiredness or low energy Trouble concentrating or remembering Pale skin Mood changes or irritability Feeling lightheaded or weak If several of these sound familiar, a simple blood test can help you and your provider decide on the next steps
For the initial treatment of vitamin B12 deficiency, the usual dose is 100mcg SC/MC, given every day for 10-15 days, followed by maintenance treatment
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