Serum Sickness with Furazolidone

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  • Office of Medical Services, Department of State, American Embassy, Washington, D.C. 20520, Panama
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Two cases of serum sickness from furazolidone (Furoxona®), prescribed for giardiasis in Latin America, are described. No previous case of serum sickness related to this drug has been reported in the United States. Tartrazine (yellow dye number 5), a component of furazolidone tablets (Furoxona) manufactured in Latin American countries but no longer included in the drug (Furoxone®) in the United States is suggested as a possible cause of serum sickness.

Author Notes

Presently Regional Medical Officer, American Embassy, Athens, Greece.