Vitamin B12 shot side effects Most people tolerate vitamin B12 injections well, but possible side effects include: Mild: soreness or redness at injection site, mild diarrhea, nausea, headache, itching Rare but serious: allergic reactions (rash, swelling, difficulty breathing), low potassium (hypokalemia), dizziness or heart rate changes Get emergency medical help if you have signs of an allergic reaction to Vitamin B12: hives
Contact your healthcare provider promptly for: Suspected injection errors or technique concerns Persistent injection site reactions lasting more than 48 hours Gastrointestinal symptoms that interfere with eating, drinking, or medication adherence Blood glucose patterns that differ significantly from your usual readings Questions about whether to administer a replacement dose after injection error Call U.S
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In addition to established efficacy for glycaemic control and weight loss, there has been growing enthusiasm surrounding the cardioprotective effects of GLP-1 agonists, as demonstrated from their superiority to placebo in multiple large studies in preventing major cardiovascular adverse events, namely reduced rates of myocardial infarcts, stroke, and rates of revascularisation procedures (Table 2)
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