Abstract
Alzheimer disease is senile decay of neurons. The hallmark of pathophysiology of AD disease has two pivotal features example- extracellular beta amyloid deposition and intracellular tau hyper phosphorylation. Memantine is an effective and approved compound in the treatment of Alzheimer disease. Due to its profound pharmacological activity, proper physic-chemical properties and well-defined chemical structures allow it to inhibit the excitatory effect of glutamine. Meta-analysis data provides us information about its effectiveness and its ease of synthesis. Memantine has no serious side effects due to which it can be a safe bet in treatment of Alzheimer disease.