NDT Plus Advance Access originally published online on April 22, 2009
NDT Plus 2009 2(4):298-299; doi:10.1093/ndtplus/sfp046
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Acetazolamide may provoke cyclosporine toxicity—a case report
1 Department of Clinical Pharmacology, University of Helsinki, Helsinki, Finland
2 Department of Internal Medicine, Turku University Hospital, Turku
3 Department of Internal Medicine
4 Department of Ophthalmology, Salo District Hospital, Salo
5 Department of Clinical Pharmacology, Tykslab, Health Care District of Southwest Finland, Turku, Finland
Correspondence: Correspondence and offprint requests to: Päivi Tuulikki Ruokoniemi; E-mail: paivi.ruokoniemi{at}utu.fi
| Abstract |
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We describe a 58-year-old female renal transplantant recipient with standard cyclosporine-based immunosuppression who developed a potentially toxic cyclosporine concentration of 265 ng/ml after having started acetazolamide for severe glaucoma. The mechanism explaining the interaction between acetazolamide and cyclosporine remains unknown, but the concomitant use of these agents is not uncommon. The follow-up of cyclosporine concentrations is necessary, and the reduction of the cyclosporine dose is likely to be needed when patients taking cyclosporine are started with acetazolamide.
Key Words: acetazolamide cyclosporine drug interactions renal transplantation
Received for publication April 2, 2009. Accepted for publication April 3, 2009.