This plant's active ingredient, huperzine A, inhibits production of an enzyme that in turn reduces the amount of an important chemical of the central nervous system called acetylcholine. And acetylcholine just happens to be in short supply in Alzheimer's patients. A review of several Chinese studies found that elderly people with the disease saw their symptoms lessen after they were given huperzine. And preliminary results from a recent clinical trial reveal that 400 (but not 200) micrograms of huperzine a day improved memory in 210 patients with mild to moderate Alzheimer's disease.
Conditions
- Alzheimer's risk
Recommendations
- 50 mcg daily
- GNC Herbal Plus Huperzine A ($15 for 50 capsules)
Interactions & Side Effects
- High blood pressure, severe liver or kidney disease. Do not take
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