Angie, my husband is on Risperdal for the last 4 years. He was prescribed it for horrific delusions/hallucinations (it's an anti-psychotic). It's a strong drug, and never prescribed lightly for people with dementia as it can (apart from other side affects) cause strokes. However, when it's needed and it works, it can be a god-send. It was for us. It was literally like someone turned a switch off, as regards the delusions etc., and my husband as a result was a lot calmer and he had 3 more good years at home, before the natural progression of the disease took its toll, so he has just had to go into full time care. Once he started on Risperdal, he went from being in a constant state of high anxiety, running around the house looking for people who werent there, terrified of what he was hearing & seeing, to being calm and relaxed, sleeping through the night, able to enjoy outings etc.
Hope things improve for you. Blessings to you. xx
PS. My husband has never shown any side effects at all from the Risperdal - not everyone does.