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NOOTROPIL
(brand name: Piracetam) |
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Reviews |
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Nootropil |
Epilepsia. 2005 Feb;46(2):324-6.
Rapid onset of action of levetiracetam in refractory
epilepsy patients.
French J, Arrigo C.
Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania,
USA.
PURPOSE: To investigate whether rapid achievement of levetiracetam (LEV)
steady state is translated into an immediate measurable efficacy. The time
to onset of action of LEV immediately after its initiation in adult patients
with refractory partial seizures was analyzed. METHODS: Treatment effect
was assessed in a pooled analysis (n=883) from three randomized, double-blind,
placebo-controlled add-on trials. RESULTS: The increase in the proportion
of seizure-free patients over baseline was 15, 17, and 17% for the first,
second, and third day, respectively, for the LEV 1,000-mg group (all differences
statistically significant; McNemar p value<0.001), whereas the increase
was 7, 9, and 9% for the 333-mg LEV group (differences not significant).
No major changes were observed for the placebo group. For differences in
proportion of seizure-free patients between groups, the probability of being
seizure free in the LEV groups was twofold higher than in the placebo group.
For the 1,000-mg LEV group, odds ratios were 2.3, 2.5, and 2.7 for the first,
second, and third day of therapy, respectively; all differences versus placebo
were statistically significant (logistic regression p values, all <0.001).
The addition of LEV significantly increased the proportion of patients without
a seizure as of the first day of therapy. Each of the first 3 days, seizure
freedom was twice as likely to occur with LEV 1,000 mg than with placebo.
CONCLUSIONS: Evidence of a rapid onset of action of LEV 1,000 mg was demonstrated
through a significant increase in the proportion of seizure-free patients
as of the first day of therapy. |
Drugs Aging. 2005;22(2):163-82.
Poststroke aphasia : epidemiology, pathophysiology and
treatment.
Berthier ML.
Centro de Investigaciones Medico-Sanitarias (CIMES), University of Malaga,
Malaga, Spain.
Aphasia, the loss or impairment of language caused by brain damage, is one
of the most devastating cognitive impairments of stroke. Aphasia is present
in 21-38% of acute stroke patients and is associated with high short- and
long-term morbidity, mortality and expenditure. Recovery from aphasia is
possible even in severe cases. While speech-language therapy remains the
mainstay treatment of aphasia, the effectiveness of conventional therapies
has not been conclusively proved. This has motivated attempts to integrate
knowledge from several domains in an effort to plan more rational therapies
and to introduce other therapeutic strategies, including the use of intensive
language therapy and pharmacological agents.Several placebo-controlled trials
suggest that piracetam is effective in recovery from aphasia when started
soon after the stroke, but its efficacy vanishes in patients with chronic
aphasia. Drugs acting on catecholamine systems (bromocriptine, dexamfetamine)
have shown varying degrees of efficacy in case series, open-label studies
and placebo-controlled trials. Bromocriptine is useful in acute and chronic
aphasias, but its beneficial action appears restricted to nonfluent aphasias
with reduced initiation of spontaneous verbal messages. Dexamfetamine improves
language function in subacute aphasia and the beneficial effect is maintained
in the long term, but its use is restricted to highly selected samples.Pharmacological
agents operating on the cholinergic system (e.g. donepezil) have shown promise.
Data from single-case studies, case series and an open-label study suggest
that donepezil may have beneficial effects on chronic poststroke aphasia.
Preliminary evidence suggests that donepezil is well tolerated and its efficacy
is maintained in the long term. Randomised controlled trials of donepezil
and other cholinergic agents in poststroke aphasia are warranted. |
Nutrition. 2003 Nov;19(11-12):957-75.
"Brain-specific" nutrients: a memory cure?
McDaniel MA, Maier SF, Einstein GO.
Department of Psychology, University of New Mexico, Albuquerque, New Mexico,
USA
We review the experimental evaluations of several widely marketed nonprescription
compounds claimed to be memory enhancers and treatments for age-related
memory decline. We generally limit our review to double-blind placebo-controlled
studies. The compounds examined are phosphatidylserine (PS), phosphatidylcholine
(PC), citicoline, piracetam, vinpocetine, acetyl-L-carnitine (ALC), and
antioxidants (particularly vitamin E).In animals, PS has been shown to attenuate
many neuronal effects of aging, and to restore normal memory on a variety
of tasks. Preliminary findings with humans, though, are limited. For older
adults with probable Alzheimer's disease, a single study failed to demonstrate
positive effects of PS on memory performance. For older adults with moderate
cognitive impairment, PS has produced consistently modest increases in recall
of word lists. Positive effects have not been as consistently reported for
other memory tests. There is one report of consistent benefits across a
number of memory tests for a subset of normal adults who performed more
poorly than their peers at baseline.The choline compounds PC and citicoline
are thought to promote synthesis and transmission of neurotransmitters important
to memory. PC has not proven effective for improving memory in patients
with probable Alzheimer's disease. The issue remains open for older adults
without serious degenerative neural disease. Research on citicoline is practically
nonexistent, but one study reported a robust improvement in story recall
for a small sample of normally aging older adults who scored lower than
their peers in baseline testing.Animal studies suggest that piracetam may
improve neuronal efficiency, facilitate activity in neurotransmitter systems,
and combat the age-related decrease in receptors on the neuronal membrane.
However, for patients with probable Alzheimer's disease, as well as for
adults with age-associated memory impairment, there is no clear-cut support
for a mnemonic benefit of piracetam.Vinpocetine increases blood circulation
and metabolism in the brain. Animal studies have shown that vinpocetine
can reduce the loss of neurons due to decreased blood flow. In three studies
of older adults with memory problems associated with poor brain circulation
or dementia-related disease, vinpocetine produced significantly more improvement
than a placebo in performance on global cognitive tests reflecting attention,
concentration, and memory. Effects on episodic memory per se have been tested
minimally, if at all.ALC participates in cellular energy production, a process
especially important in neurons, and in removal of toxic accumulation of
fatty acids. Animal studies show that ALC reverses the age-related decline
in the number of neuron membrane receptors. Studies of patients with probable
Alzheimer's disease have reported nominal advantages over a range of memory
tests for ALC-treated patients relative to placebo groups. Significant differences
have been reported rarely, however. Whether ALC would have mnemonic benefits
for aging adults without brain disease is untested as far as we know.Antioxidants
help neutralize tissue-damaging free radicals, which become more prevalent
as organisms age. It is hypothesized that increasing antioxidant levels
in the organism might retard or reverse the damaging effects of free radicals
on neurons. Thus far, however, studies have found that vitamin E does not
significantly slow down memory decline for Alzheimer's patients and does
not produce significant memory benefits among early Parkinson's patients.
Neither did a combination of vitamins E and C significantly improve college
students' performance on several cognitive tasks.In sum, for most of the
"brain-specific" nutrients we review, some mildly suggestive effects
have been found in preliminary controlled studies using standard psychometric
memory assessments or more general tests designed to reveal cognitive impairment.
We suggest that future evaluations of the possible memory benefits of these
supplements might fruitfully focus on memory processes rpplements might
fruitfully focus on memory processes rather than on memory tests per se.
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| Dement Geriatr Cogn
Disord 2002;13(4):217-24
Clinical efficacy of piracetam in cognitive impairment:
a meta-analysis
Waegemans T, Wilsher CR, Danniau A, Ferris SH, Kurz
A, Winblad B
Research and Development, UCB SA (Pharma Sector), Braine-l'Alleud, Belgium
A meta-analysis has been performed including nineteen double blind, placebo
controlled studies with piracetam in patients suffering from dementia
or cognitive impairment in the elderly. These studies had as common outcome
measure a clinical global impression of change, a measure of clinically
meaningful improvement. The meta-analysis of this global outcome followed
the methodology set forward by the Cochrane Collaboration. This article
describes the studies, the patient populations and the methods of data
extraction. The results of the meta-analysis demonstrate a difference
between those individuals treated with piracetam and those given placebo,
both as significant odds ratio and as a favourable number needed to treat.
While there may be problems in meta-analyses and the interpretation of
the statistical results, the results of this analysis provide compelling
evidence for the global efficacy of piracetam in a diverse group of older
subjects with cognitive impairment. Copyright 2002 S. Karger AG, Basel. |
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Drug information |
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| Pharmacological classification:
Central Analeptics.
Action:
An effect on metabolism has been shown in man indicating improved oxygen
utilisation. NOOTROPIL has a low toxicity and has no stimulating, sedative
or neurovegitative activities.
Indications:
Piracetam has been used with varying effect in the following conditions
and could influence them favourably, although no convincing proof of efficacy
has been submitted.
1. Involutional syndromes related to ageing.
2. Chronic alcoholism.
Contraindications:
Piracetam has not been found to have any contra-indications to date.
Dosage for adults:
1 x 800 mg tablet three times daily. This initial dosage should be carried
on for 3 to 8 weeks before the dosage is gradually reduced to half a tablet
three times daily.
Caution! Before starting
to take this medicine, it is vital that you should consult your doctor!
Do not use it on your own initiative, without medical advice.
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Order now ! |
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NOOTROPIL
Substance: piracetam
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Dosage |
Packing |
Price |
Pay now |
800 mg |
90 tab |
USD 29.00 |
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1200 mg |
60 tab |
USD 27.00 |
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1200 mg |
100 tab |
USD 39.00 |
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