Idebenone appears most effective in patients with moderately severe Alzheimer's disease.

Donepezil (Aricept) is approved to treat mild, moderate, and severe Alzheimer's.

Namenda is approved for moderate to severe Alzheimer's disease.

It could be that at the time he's in his 50s, he could have severe Alzheimer's symptoms.

Memantine has been shown to be moderately efficacious in the treatment of moderate to severe Alzheimer's disease.

People with severe Alzheimer's may find it difficult to perform everyday tasks, such as dressing, washing and eating.

So how did a 40-year-old man have a brain comparable to that of an 85-year-old man with severe Alzheimer's?

It is an option for the management of patients with moderate to severe Alzheimer's Disease (modest effect).

Vitamin E might slow down the worsening of memory loss in people with moderately severe Alzheimer's disease.

Memantine treatment in patients with moderate to severe Alzheimer's disease already receiving donepezil.