Clinical trials of N-acetylcysteine [NAC] in psychiatry and neurology: A systematic review:
"In this systematic review we find favorable evidence for the use of NAC in several psychiatric and neurological disorders, particularly autism, Alzheimer's disease, cocaine and cannabis addiction, bipolar disorder, depression, trichotillomania, nail biting, skin picking, obsessive-compulsive disorder, schizophrenia, drug-induced neuropathy and progressive myoclonic epilepsy."
https://www.sciencedirect.com/science/article/pii/S0149763415001190