My dad has diabities. 3 days back he had lot of cough and doc gave him zedex-sf syrup. After which he is having lot of weakness. If he sits for 5 mins he falls asleep and also moves his hands and talks a bit in sleep. Really concrrened if its a side effect of cough syrup
Usually all cough syrups are sedative, also check for overdosing of syrup. If symptoms are severe kindly stop the cough syrup.