Alzheimer's Tennessee, Inc. – Support, Education and Research for Alzheimer's Disease and Related Dementias
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Alzheimer's Disease Treatments

There is no known cure for Alzheimer’s disease, but there are treatments that can prevent some symptoms from getting worse for a limited time. Ongoing research offers hope that someday it may be possible to delay the onset of Alzheimer’s, slow its progress, or prevent it altogether.

The course of Alzheimer’s disease—which symptoms appear and how quickly changes occur—varies from person to person. The time from diagnosis to the end of life varies, too. It can be as little as 3 years if the person is over 80 years old when diagnosed, or as long as 10 years or more if the person is younger.

A person with Alzheimer’s should be under a doctor’s care and may see a neurologist, psychiatrist, family doctor, internist, or geriatrician (a specialist who treats older adults). The doctor can treat the person’s physical and behavioral problems and answer the many questions that the person and his or her family may have.

Several prescription drugs are currently approved by the U.S. Food and Drug Administration (FDA) to treat people who have been diagnosed with Alzheimer’s disease. Treating the symptoms of Alzheimer’s can provide patients with comfort, dignity, and independence for a longer period of time and can encourage and assist their caregivers as well.

More details about treatments and medications below.

More Treatment Info

It is important to work closely with a competent, experienced physician in determining the best treatment, to ensure that the safest, most effective medication regime is being prescribed for your individual situation.

The most common types of progressive dementia are Alzheimer’s disease (AD), vascular dementia, dementia with Lewy bodies (DLB), and frontotemporal dementia (FTD). Although there are currently no cures for these diseases, in all cases there are medications available to help manage the symptoms of the disease and in some cases there are medications available to help slow the progression of cognitive decline.

How is Alzheimer’s treated today?

Alzheimer’s Disease (AD) is a complex disease, and no single “magic bullet” is likely to prevent or cure it. That’s why current treatments focus on several different issues, including helping people maintain mental function, managing behavioral symptoms, and slowing AD.

The Food and Drug Administration has approved four medications to treat AD:

  • Rivastigmine (Exelon®), and Galantamine (Razadyne®) are approved for mild to moderate AD.
  • Donepezil (Aricept®) is approved for all stages of AD.
  • Another medication, Memantine (Namenda®) has been approved to treat moderate to severe AD.
  • Namenda® is also approved to be prescribed in conjunction with any of the other three drugs.

Other medicines may ease the behavioral symptoms of AD-sleeplessness, agitation, wandering, anxiety, anger, and depression. Treating these symptoms often makes patients more comfortable and makes their care easier for caregivers.

No published study directly compares the four approved AD drugs. Because they work in a similar way, it is not expected that switching from one of these drugs to another will produce significantly different results. However, an AD patient may respond better to one drug than another.

For more specific information about each FDA-approved drug, you may download an Alzheimer's Disease Medications Fact Sheet from the National Institutes of Health (NIH).

Future Treatments

AD research has developed to a point where scientists can look beyond treating symptoms to think about delaying or preventing AD by addressing the underlying disease process. Scientists are looking at many possible interventions, such as treatments for heart disease and type 2 diabetes, immunization therapy, cognitive training, changes in diet, and physical activity

NIA, part of the National Institutes of Health, is the lead Federal agency for AD research. NIA-supported scientists are testing a number of drugs and other interventions to see if they prevent AD, slow the disease, or help reduce symptoms.


Scientists are very interested in the toxic effects of beta-amyloid-a part of amyloid precursor protein found in deposits (plaques) in the brains of people with AD. Studies have moved forward to the point that researchers are carrying out preliminary tests in humans of potential therapies aimed at removing beta-amyloid, halting its formation, or breaking down early forms before they can become harmful. For example, in a clinical trial sponsored by NIA, scientists are testing whether “passive” immunization with an FDA-approved drug called IGIV can successfully treat people with Alzheimer’s.

The aging process

Some age-related changes may make AD damage in the brain worse. Researchers think that inflammation may play a role in AD. Studies have suggested that common nonsteroidal anti-inflammatory drugs (NSAIDs) might help slow the progression of AD, but clinical trials so far have not shown a benefit from these drugs. Researchers are continuing to look at how other NSAIDs might affect the development or progression of AD.

Scientists are also looking at free radicals, which are oxygen or nitrogen molecules that combine easily with other molecules. The production of free radicals can damage nerve cells. The discovery that beta-amyloid generates free radicals in some AD plaques is a potentially significant finding in the quest to understand AD better.

Heart disease and diabetes

Research has begun to tease out relationships between AD and vascular diseases, which affect the body’s blood vessels. Some scientists have found that some chronic conditions that affect the vascular system, such as heart disease and diabetes, have been tied to declines in cognitive function or increased AD risk. Several clinical trials are studying whether treatments for these diseases can improve memory and thinking skills in people with AD or mild cognitive impairment.

Lifestyle factors

A number of studies suggest that factors such as a healthy diet, exercise, and social engagement may be related to the risk of cognitive decline and AD. For example, emerging evidence suggests that physical activity might be good for our brains as well as our hearts and waistlines. Some studies in older people have shown that higher levels of physical activity or exercise are associated with a reduced risk of AD. Clinical trials are underway to study the relationship of exercise to healthy brain aging and the development of AD.

Scientists have also studied whether diet may help preserve cognitive function or reduce AD risk. Some studies have found that a “Mediterranean diet” was associated with a reduced risk of AD. To confirm the results, scientists are conducting clinical trials to examine the relationship between specific dietary components and cognitive function and AD.

Studies are looking into many other possible treatments, including hormones and cognitive training, to see if they might improve thinking skills in people with AD or even prevent AD in people who are at risk. 

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