My dad's been plagued with periodic hallucinations, which initially, ultimately settled on mostly appearing at night. Yet, now they appear semi-frequently throughout the day. He's actually not on any heavy meds although was recently prescribed a half pill, nightly of 25mg Quentiapine Fumarate. He can be unpredictable, hostile with sleeplessness, so I had suggested a mild sleeping pill. And found out recently that the prescription was not a sleeping pill but to decrease hallucinations, which it isn't overly effective. I've tried teaching him to "disprove" hallucinations by attempting to touch and question them! I'm having weak, inconsistent success.