Vitamin B12 injection, reviewed by a provider
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Research GuidesB12 and performance, neuropathy, cognition and heart outcomesWhat a performance trial, Cochrane reviews and a methylcobalamin trial report on B12, nerves, cognition and heart outcomes.Read guide →Research GuidesB12 for energy and fatigue: what trials measuredWhat reviews and trials in people with and without a B12 deficiency measured for fatigue, mood and wellbeing, including null results.Read guide →Research GuidesWhat the B12 injection label says about route, monitoring and dietA summary of cyanocobalamin injection label statements on route, tests, potassium, allergy and interactions, for the approved product only.Read guide →Research GuidesB12 injection label warnings: what the label saysWhat the prescribing information for cyanocobalamin injection says in its contraindication and warnings, and who each statement is about.Read guide →Research GuidesB12 injection side effects and when to call a providerAdverse reactions the label lists, other label statements, and what a MedlinePlus page says about anaphylaxis and calling 911.Read guide →Research GuidesB12 in pregnancy, breastfeeding and childhood: what sources sayWhat the cyanocobalamin injection label, the NHLBI and a Cochrane review say about B12 in pregnancy, nursing and children.Read guide →Research GuidesHigh B12 levels and cancer: what observational studies foundWhat studies and reviews report about high B12 levels and supplement use, and what each source did and did not measure.Read guide →Research GuidesInjection versus oral B12: what trials and reviews foundWhat a Cochrane review, four randomized trials and other reviews report on oral versus injected B12 in people with deficiency, and their limits.Read guide →Research GuidesUntreated B12 deficiency and folic acid: what sources sayWhat the label and NHLBI say about untreated B12 deficiency, and how the label and a historical review differ on folic acid.Read guide →Research GuidesWhat a compounded B12 injection means, according to FDA pages and reviewsWhat FDA pages and reviews say about compounded drugs, and that no source here tests the content or sterility of any compounded B12 product.Read guide →Research GuidesWhat a vitamin B12 injection is and what the label saysA plain summary of what the cyanocobalamin injection label says about the product, its listed indications and oral supplementation.Read guide →Research GuidesWho is at risk of low B12, and how is deficiency diagnosed?What guidelines, reviews and patient pages say about B12 deficiency risk groups, tests and drugs, with each source's group and limits.Read guide →