Please read the posts by Donzim, her husband suffered from hallucinations and he had Parkinson's. They stopped the hallucinations by using niacin. She's giving name of a doctor that you can look up his work on Google. If you have never taken niacin I will start slowly since its causes flushing of the face and the ears. Your body gets used to it after a while however it's a little bit disconcerting When you first start. Mary
Parkinson's hallucinations and taking... - Parkinson's Movement
I checked my book "Niacin: the real story" which says "regular niacin is quite safe, extended - or time release are safe, but unnecessarily pricey, and sustained release has the most side effects" which later was explained that increase in liver toxicity of sustained release niacin mainly occurred with doses 1,500 mg/day.
So time release niacin should be safe, sorry for the alarm.