# OnCo record vitamin-b12-supplements (technology). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/technologies/vitamin-b12-supplements/>
  a schema:MedicalTherapy ;
  onco:kind "technology" ;
  schema:identifier "vitamin-b12-supplements" ;
  schema:name "Vitamin B12 supplements"@en ;
  schema:alternateName "Cyanocobalamin"@en, "Cobalamin"@en ;
  schema:description "Vitamin B12 is essential, and people who lack it, for example after stomach surgery or on long-term metformin or acid-suppressing tablets, need it replaced. Taken as an extra by people who are not deficient it has not been shown to prevent cancer or improve fatigue, and one study linked B12 supplements during chemotherapy with worse outcomes."@en ;
  schema:url <https://onco.cc/technologies/vitamin-b12-supplements/> ;
  schema:dateModified "2026-11-04"^^xsd:date ;
  schema:citation <https://www.mskcc.org/cancer-care/integrative-medicine/herbs/vitamin-b12> ;
  onco:status "phase-2" ;
  onco:tag "complementary", "supportive-care", "evidence:insufficient" ;
  onco:related <https://onco.cc/technologies/folic-acid-supplements/>, <https://onco.cc/technologies/vitamin-b6-pyridoxine/> ;
  onco:sections <https://onco.cc/fronts/supportive-care/>, <https://onco.cc/fronts/nutrition-lifestyle/> ;
  onco:technologies <https://onco.cc/technologies/integrative-oncology/>, <https://onco.cc/technologies/dietary-supplements-treatment-interactions/> ;
  onco:terms <https://onco.cc/terms/aromatase-inhibitor/> ;
  onco:bottlenecks <https://onco.cc/bottlenecks/b-toxicity-qol/> .