Clinical and laboratory evaluation of praziquantel in opisthorchiasis.

A total of 122 patients were treated with a single dose of praziquantel 40 mg per kilogramme body weight, with 96 patients completing the follow up period of 60 days. The parasitological cure rate was 95.8% by single faecal examination. These patients had mild clinical manifestations. The hematological, biochemical and the liver function tests were within the normal limits. High eosinophilia was observed in 84.5% but there were no significant difference after eradication of the flukes. No significant changes were observed in the laboratory investigation at day 60 post treatment.