"started this medicine at 45 yrs and have gained 35lbs in three years without any change in diet or exercise. take 4mg day and this is the only medicine i take. find that this medicine will cause psychotic episodes if taken with more than a 6-8 beers or half bottle of spirits. next day i can&#039;t remember what i said or was doing and this is not good. if you like to consume alcohol beware of this drug as it will turn you into a zombie who does not remember later what you did or said, very scary. haloperidol was once prescribed for a couple of days and i experienced double vision and extreme paranoia as well as chest pains."