Abstract
To test the hypothesis that absorption of orally administered itraconazole may be reduced in patients with the Acquired Immunodeficiency Syndrome (AIDS), 8 patients with AIDS were given two 100 mg capsules of itraconazole for 15 days. Plasma levels were measured by HPLC hourly for the first 8 h following ingestion, then at 24, 48, 72 and 96 h on days 1, 8 and 15. Peak plasma levels occurred after approximately 4 h. Mean peak plasma concentrations were 446 +/- 196 and 530 +/- 214 ng mL-1 at days 8 and 15. The area under the curve over 24 h (AUC0-24) was 2105 +/- 1241, 7679 +/- 3838 and 8748 +/- 4385 ng mL-1 h for days 1, 8 and 15, respectively. Steady-state was achieved after one week of dosing. There was no evidence of hepatotoxicity and one patient stopped itraconazole due to a rash. It may be concluded that the absorption of oral itraconazole capsules is reduced in AIDS patients, by a factor of approximately 50%, when compared with normal volunteers. AIDS patients may require higher doses of itraconazole than used in non-AIDS patients to achieve comparable plasma levels.
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