Plasma levels of mebendazole in children with hydatid disease.

The plasma levels of mebendazole in children with hydatid cyst disease were measured with high pressure liquid chromatography. In 24 children who received mebendazole orally in a dose of 50 mg/kg, the mean (SD) level 4 hours later was 25.76(9.81) ng/ml (87.6(33) nanomole/l). This result was similar to those in most adult series. During more prolonged treatment, the plasma level 4 hours after the dose of the drug rose significantly with respect to the initial level (p < 0.05).