patient is too sick for haloperdol
Welcome to healthcare Magic!
Haloperidol itself does not cause stroke. It can cause movement disorder
called extra pyramidal syndrome
, that subsided after discontinuation of haloperidol.
Some patients have long QT in ECG and may develop serious cardiac arrhythmias with haloperidol.
Your patient is drowsy and is not fit to receive haloperidol anymore.
The cause of drowsiness should be treated, if patient is not conscious enough to protect airway then he should be intubated.
Check if he is having Hyponatremia
, if so they should be corrected.
I hope the advise would be informative and useful for you.