<unk>  is an Uncompetitive N-methyl-D-aspartate Receptor Antagonist that is FDA approved for the treatment of moderate to severe dementia of the Alzheimer's type.   Common adverse reactions include Hypertension, Hypotension, Syncope, Diarrhea, Vomiting, Backache, Confusion, Dizziness, Headache, Cough, Pain.
Memantine
Diprenorfin
Rivastigmine 
Rivastigmine
Donepezil
Perhexiline
Levodopa
Fendiline