<prompt> The most common side effect repoed with treatment with haloperidol is:HypotensionAkathisiaDryness of mouthTic disorder  <response>: Haloperidol is a high potency antipsychotic and extra pyramidal disturbances Akathasia, Acute dystonia, Parkinsonism are the majormost common repoed side effects associated with its use. Ref: Essentials of Pharmacology by KD Tripathi, 5th Edition, Page 377; The Evidence-Based Guide to Antipsychotic Medications edited by Anthony J. Rothschild, 2010, Page 176; Kaplan and Sadocks Psychiatry, 9th Edition, Page 1055. 