ACHE and dementia: For mild to moderate dementia due to Alzheimer's disease (ADD), the most common cause of dementia (van der Flier and Scheltens, 2005), symptomatic treatment with acetylcholinesterase inhibitors (AChE-I) such as donepezil, galantamine, or rivastigmine is recommended (Doody et al., 2001; Dimentia, 2007; Gauthier et al., 2012; Deuschl, 2016; Dyer et al., 2016).