Cyanocobalamin
Also known as: Nascobal
General information only. Anpheros does not diagnose and does not recommend treatment. Talk to a doctor or pharmacist about your situation. In an emergency, call 112 (or your local emergency number).
In short
In the United States, cyanocobalamin is indicated for vitamin B12 deficiencies due to malabsorption, which may be associated with conditions such as Addisonian anemia, gastrointestinal pathology, dysfunction, or surgery, fish tapeworm infestation, malignancy of the pancreas or bowel, and folic acid deficiency. Surgical correction of anatomic lesions, expulsion of fish tapeworms, discontinuation of certain drugs, a gluten-free diet, or antibiotic administration may treat the underlying disease and remove the need for long-term cyanocobalamin administration. While vitamin B12 requirements in excess of normal due to pregnancy, thyrotoxicosis, hemolytic anemia, hemorrhage, malignancy, or hepatic and renal disease can usually be met with oral supplementation, cyanocobalamin injection is also suitable for the Schilling vitamin B12 absorption test.
From: Data provided by the U.S. Food and Drug Administration.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
- RxNorm
- 11248 vitamin B12
Official indications
Quoted unchanged from official product information, in English. Listed alphabetically by product, not ranked.
FDA (USA) CYANOCOBALAMIN
Cyanocobalamin is indicated for vitamin B12 deficiencies due to malabsorption which may be associated with the following conditions: Addisonian (pernicious) anemia Gastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomy Fish tapeworm infestation Malignancy of pancreas or bowel Folic acid deficiency It may be possible to treat the underlying disease by surgical correction of anatomic lesions leading to small bowel bacterial overgrowth, expulsion of fish tapeworm, discontinuation of drugs leading to vitamin malabsorption (see Drug Interactions), use of a gluten-free diet in nontropical sprue, or administration of antibiotics in tropical sprue. Such measures remove the need for long-term administration of cyanocobalamin. Requirements of vitamin B12 in excess of normal (due to pregnancy, thyrotoxicosis, hemolytic anemia, hemorrhage, malignancy, hepatic and renal disease) can usually be met with oral supplementation. Cyanocobalamin Injection, USP is also suitable for the vitamin B12 absorption test (Schilling test).
Data provided by the U.S. Food and Drug Administration.
Document date: 20260902 · Official document →
Other treatments A–Z
What people report
Not enough data yet. Anonymous counts appear here only for groups of at least 20 people who agreed to share them.
External resources
Questions
What is Cyanocobalamin approved for in the United States?
Cyanocobalamin is indicated for vitamin B12 deficiencies due to malabsorption which may be associated with the following conditions: Addisonian (pernicious) anemia Gastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomy Fish tapeworm infestation Malignancy of pancreas or bowel Folic acid deficiency It may be possible to treat the underlying disease by surgical correction of anatomic lesions leading to small bowel bacterial overgrowth, expulsion of fish tapeworm, discontinuation of drugs leading to vitamin malabsorption (see Drug Interactions), use of a gluten-free diet in nontropical sprue, or administration of antibiotics in tropical sprue. Such measures remove the need for long-term administration of cyanocobalamin. Requirements of vitamin B12 in excess of normal (due to pregnancy, thyrotoxicosis, hemolytic anemia, hemorrhage, malignancy, hepatic and renal disease) can usually be met with oral supplementation. Cyanocobalamin Injection, USP is also suitable for the vitamin B12 absorption test (Schilling test). (Data provided by the U.S. Food and Drug Administration.)
Sources and attribution
- Data provided by the U.S. Food and Drug Administration.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
About this page. This page brings together public information from official sources, each cited where it is used. It is not medical advice, it is not a diagnosis, and it does not tell you which treatment to take.
Treatments. Indications are quoted unchanged from official product information (European Medicines Agency, U.S. Food and Drug Administration). They describe what a medicine is approved for, not whether it is right for you. Approved uses can differ between countries. Always read the package leaflet and follow your doctor's or pharmacist's advice.
What people report. Figures marked "reported by Anpheros users" are anonymous counts from at least 20 people who agreed to share them. They show what people report, not what works, and they are not clinical evidence.
Links between terms. "May be associated with" means the link appears in a cited source. It does not mean you have that condition.
In an emergency, call 112 (or your local emergency number). Do not delay seeking medical help because of something you read here.