USE WITH OTHER ANTICHOLENERGIC DRUGS SUCH AS ATROPINE, CHOLINE ACTIVATORS & CHOLINESTERASE INHIBITORS SUCH AS ACETYLCHOLINE CHLORIDE, NEOSTIGMINE MAY POTENTIATE SIDE EFFECTS. LEVOSULPIRIDE INCREASES INCIDENCE OF DRUG INDUCED PARKINSONISM. DOMPERIDONE INCREASES RISK OF SUDDEN DEATH.