Huperzine capsule
Huperzine research huperzine side effects huperzine and Alzheimer

Huperzine A is an extract from a club moss (Huperzia serrata) that has been used for centuries in Chinese folk medicine. Huperzine's action has been attributed to its ability to strongly inhibit acetylcholinesterase, the enzyme that breaks down acetylcholine in the synaptic cleft. Acetylcholine is involved in
memory and learning. By inhibiting the enzyme that breaks it down, more acetylcholine becomes available to stimulate neurons. Alzheimer’s disease is a condition where there’s a relative shortage of acetylcholine.
   Several studies have been done over the past few years with huperzine A both in China and the United States. These studies have shown that Huperzine A is many times more effective and selective than tacrine (a cholinesterase-inhibiting pharmaceutical drug) in inhibiting cholinesterase (Cheng 1996). Huperzine A has also been found to be beneficial in patients with Alzheimer’s disease. Scientists at Zhejiang Medical University, in Hangzhou, China administered 0.2 mg of huperzine A to fifty patients with Alzheimer’s disease for a period of eight weeks and compared the results to a group who received placebo pills (Xu 1995). The study was done in a double blind, placebo controlled and randomized manner. The results showed 58 percent of the patients treated with huperzine A had improvements in memory, cognition, and behavioral functions whereas only 36 percent of those on placebo improved. No severe side effects were found. Blood pressure, heart rate, electrocardiogram, electroencephalogram, liver and urine tests did not show any major abnormalities. The researchers say, "Huperzine A is a promising drug for symptomatic treatment of Alzheimer's disease." For more huperzine a information, or to purchase
Huperzine capsules.

Benefit of huperzine
Huperzine A may benefit those with Alzheimer's disease and perhaps also benefit older individuals with dementia. The role of huperzine as a mind booster in younger individuals is not clear at this time.
   Huperzine A has brain protective effects that go beyond the inhibition of acetylcholinesterase. Huperzine Acan improve the learning and memory deficiency in animal models and Alzheimer's disease patients. This herbal extract can modify beta-amyloid peptide processing, reduce oxidative stress, protect neurons against cell death, and regulate the expression and secretion of nerve growth factor (NGF) and NGF signaling.

Huperzine A for Alzheimer's disease
Researchers are trying to find out whether a compound derived from the Chinese club moss Huperzia serrata improves brain function in Alzheimer's patients. Huperzine A is a naturally occurring cholinesterase inhibitor that's commonly used in China to treat Alzheimer's. The Phase II clinical trial will enroll about 150 patients, age 55 and older, with mild to moderate Alzheimer's disease. According to Dr. Paul Aisen, leader of the new study and professor of neurology at Georgetown University Medical Center's Memory Disorders Program, "Based on studies in China, huperzine A may be more effective and better tolerated than currently prescribed drugs for Alzheimer's disease. In addition, laboratory studies suggest that huperzine A may have unique effects that could slow down the progression of the disease." "This trial is essential to better understand the promise of huperzine A," Aisen said. "Though it is a rigorous placebo-controlled trial, all participants do receive the active medication. The first portion of the trial, lasting 16 weeks, includes a placebo arm, but all participants have the opportunity to take active huperzine A for at least eight months. The study, directed by Georgetown University researchers, is funded by the U.S. National Institutes of Health and Neuro-Hitech Pharmaceuticals Inc.


Huperzine Caution
High doses of huperzine may be toxic. Due to its strong anticholinesterase activity, huperzine could cause a cholinergic reaction. Side effects could include sweating, nausea, vomiting, dizziness, and cramps.


Huperzine Research Update
Clinical efficacy and safety of huperzine Alpha in treatment of mild to moderate Alzheimer disease, a placebo-controlled, double-blind, randomized trial

Zhang Z,.  Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China.
Zhonghua Yi Xue Za Zhi. 2002 Jul 25;82(14):941-4.
To evaluate the clinical efficacy and safety of huperzine Alpha in treatment of patients with mild to moderate Alzheimer disease. Two hundred and two patients with the diagnosis of possible or probable Alzheimer disease from 15 centers the nationwide were randomly divided into two groups: huperzine Alpha group given huperzine Alpha 400 micro g/day for 12 weeks and placebo group. In comparison with the baseline data, there was an improvement of 4.6 points in cognition assessed by ADAS-Cog; an improvement of 2.7 points by MMSE, an improvement of 1.5 points in behavior and mood by ADAS-non-Cog with 59% of the patients being on the mend clinically; and an improvement of 2.4 points in activities of daily living scale. Mild and transient side effects (edema of bilateral ankles and insomnia) were observed in 3% of huperzine Alpha treated patients. An effective medicine, huperzine Alpha remarkably improves the cognition, behavior, and mood of Alzheimer disease patients.

Huperzine supplement Emails
Q.
Is Huperzine's effect cumulative?
  
A. Since huperzine has a long half life, our best guess is that the effects are cumulative.

Q. I read a warning about anticholinergic drugs (or nutrients) actually being a possible "cause" of memory loss and hallucinations. I thought you might be able to tell me which are the anticholinergic supplements any of us may be taking. I did notice that Vinpocetine and Huperzine A were two of the nutrients which were mentioned as having this property. Interesting, that these were two nutrients I have not been able to use for myself--one causing a rash and I can't remember the problem with the other, so I had already dropped those two some time ago. What other nutrients would he consider anticholinergic?
   A. Huperzine A is a cholinesterase inhibitor, meaning it blocks an enzyme that breaks down the neurotransmitter acetylcholine, thus more acetylcholine stays in the body and brain. Galantamine falls in this category. An anticholinergic medication is a substance that blocks the neurotransmitter acetylcholine in the central and the peripheral nervous system. Anticholinergics reduce the effects of acetylcholine on acetylcholine receptors in neurons. In other words, huperzine A is the opposite of an anticholinergic. Vinpocetine acts as a vasodilator, it dilates blood vessels.

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