Alternative Treatments for Alzheimer’s

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Herbal Remedies for Alzheimer's and Dietary Supplements for Alzheimer's

Several herbal remedies and other dietary supplements are promoted as effective treatments for Alzheimer’s disease and related disorders. Claims about the safety and effectiveness of these products, however, are based largely on testimonials, tradition, and a rather small body of scientific research. The rigorous scientific research required by the U.S. Food and Drug Administration for the approval of a prescription drug is not required by law for the marketing of dietary supplements.

Concerns about alternative therapies

Although many of these remedies may be valid candidates for treatments, there are legitimate concerns about using these drugs as an alternative or in addition to physician-prescribed therapy:

• Effectiveness and safety are unknown. The maker of a dietary supplement is not required to provide the U.S. Food and Drug Administration (FDA) with the evidence on which it bases its claims for safety and effectiveness.
• Purity is unknown. The FDA has no authority over supplement production. It is a manufacturer’s responsibility to develop and enforce its own guidelines for ensuring that its products are safe and contain the ingredients listed on the label in the specified amounts.
• Bad reactions are not routinely monitored. Manufacturers are not required to report to the FDA any problems that consumers experience after taking their products. The agency does provide voluntary reporting channels for manufacturers, health care professionals, and consumers, and will issue warnings about products when there is cause for concern.

Dietary supplements can have serious interactions with prescribed medications. No supplement should be taken without first consulting a physician.

Alzheimer's and Coenzyme Q10

Coenzyme Q10, or ubiquinone, is an antioxidant that occurs naturally in the body and is needed for normal cell reactions to occur. This compound has not been studied for its effectiveness in treating Alzheimer’s.

A synthetic version of this compound, called idebenone, was tested for Alzheimer’s disease but did not show favorable results. Little is known about what dosage of coenzyme Q10 is considered safe, and there could be harmful effects if too much is taken.

Alzheimer's and Ginkgo biloba

Ginkgo biloba is a plant extract containing several compounds that may have positive effects on cells within the brain and the body. Ginkgo biloba is thought to have both antioxidant and anti-inflammatory properties, to protect cell membranes, and to regulate neurotransmitter function. Ginkgo has been used for centuries in traditional Chinese medicine and currently is being used in Europe to alleviate cognitive symptoms associated with a number of neurological conditions.

In a study published in the Journal of the American Medical Association (October 22/29, 1997), Pierre L. Le Bars, MD, PhD, of the New York Institute for Medical Research, and his colleagues observed in some participants a modest improvement in cognition, activities of daily living (such as eating and dressing), and social behavior. The researchers found no measurable difference in overall impairment.

Results from this study show that ginkgo may help some individuals with Alzheimer’s disease, but further research is needed to determine the exact mechanisms by which Ginkgo works in the body. Also, results from this study are considered preliminary because of the low number of participants, about 200 people.

Currently, multicenter trial with about 3,000 participants is investigating whether Ginkgo may help prevent or delay the onset of Alzheimer’s disease or vascular dementia.

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Reviewed: 03/2006