Allergy to hydroxycobalamin, with tolerance of cyanocobalamin

Heyworth-Smith, David; Hogan, Patrick G

doi:10.5694/j.1326-5377.2002.tb04709.x

Topics

To the Editor: Cyanocobalamin and hydroxycobalamin are synthetically derived preparations of vitamin B12. Allergy to vitamin B12 injection is infrequent, but may be serious. We describe a patient with allergy to hydroxycobalamin, without cross-reaction to cyanocobalamin.

Correspondence: David_Heyworth-Smith@health.qld.gov.au

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