<unk>  is a reversible inhibitor of the enzyme acetylcholinesterase that is FDA approved for the {{{indicationType}}} of dementia of the Alzheimer's type.   Common adverse reactions include hypertension, syncope, weight decreased, diarrhea, loss of appetite, nausea, vomiting, contusion, asthenia, depression and urinary incontinence.
Donepezil
Carbidopa and Levodopa
Levodopa
Melevodopa
Adrafinil
Memantine
Rivastigmine 
Rivastigmine