For example, in the six patients described above, acetylcholinesterase inhibitors were effective within a few days (i.e., much faster than the antipsychotics used in patients experiencing verbal auditory hallucinations), at a low dose (rivastigmine 1.5 mg is much lower than the 9 mg dose used for dementia), and with substantial effect. The gene discussed is ACHE; the disease is dementia.