CLINICAL PHARMACOKINETICS OF ALBENDAZOLE IN CHILDREN WITH NEUROCYSTICERCOSIS

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Abstract
The pharmacokinetics of albendazole sulphoxide, the main metabolite of albendazole, were studied in eight children with brain cysticercosis. Albendazole was given as a single oral dose of 15 mg per kg body weight (Zentel suspension; Smith Kline & Beecham, Philadelphia, PA). Blood samples were taken during 24 h and analyzed by high performance liquid chromatography. Plasma levels showed great interindividual variation. Maximum plasma levels for albendazole sulphoxide ranged from 0.2-1.0 microg/mL. A double peak was found in four children. The half-life for albendazole sulphoxide was from 2.3-8.3 hours and mean residence time values were from 5. 1-13.6 hours. These values are shorter than those found in adults. The results suggest that when treating children with neurocysticercosis, albendazole should be administered three times a day rather than twice daily as is currently done in Mexico.

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