sir my son doesnt speak and respond very little to his name and also he doesnot sleep at night .. my paedriatician told he may be autistic ..so he prescribed the following medicine 1) cos 3 ( 5ml 1time) 2) cognivin(2.5ml 2time) 3) noctura syrup(5ml at bed time) after taking the noctura syrup at night he sleeps at 9.30pm and again wakes up at 12:30am .. and starts crying till 1.30 am .. and he wanted to sit on his own but he couldnot .. he feels drowsy .. i call my doctor and he said to give noctura syrup 2.5ml ..