Objectives: To compare the efficacy, safety and cost of Pakistani anti-snake venom with that imported from India
Methods: The comparative cross-sectional study was conducted from June to September 2010 and comprised patients hospitalised following Krait snake bite in Mithi and Umerkot hospitals of Tharparker district who had incoagulable blood test on admission (20-minute whole blood clotting time). Basic demographies of patients, the site of bite and swelling around the bite and joints were entered in a proforma. For blinding, the liquid anti-snake venoms were packed in opaque polythene bags and marked as "A" and "B", and refrigerated.