SymmetrelGeneric Symmetrel is a medication anti-virus. It blocks the actions of virus in his body. Generic Symmetrel is used to treat and to prevent influenza A (viral infection). Generic Symmetrel also is used to treat Parkinson' disease and " of s; Parkinson-like" symptoms such as stiffness and shock that can be caused by the drug use certain. Four drugs have been approved to fight the influenza: Amantadine (Symmetrel); Oseltamivir (Tamiflu); Rimantadine (Flumadine); and Zanamivir (Relenza) The amantadine has 10 chemical formula Cs H 17 N.It is a drug anti-virus that was approved in 1976 for the treatment of the approved drugs A.Other of the influenza for the influenza is rimantadine, and to oseltamivir. All these medications are medecines of sale with prescription, and a doctor must be consulted before the drugs are used. When they are used for the prevention, they are near 70% to effective 90% to prevent disease in healthy adults. If they are taken within 2 days to obtain of patient, these drugs can reduce the symptoms of the influenza and shorten the time that you are ill by 1 or 2 days. Also they can make him less contagious to others. All these drugs must be prescribed by a doctor and be taken by 5 days. The drugs anti-virus are effective only against influenza virus. They will not help to the symptoms associated to the common cold or much another one influenza-like the diseases caused by the virus that circulate in the winter. All the drugs anti-virus are different in terms of whom it can take it, how it occurs, any change of dosage based on age or the ailments, and the indirect effect. Their doctors will help to decide if you must obtain antivirals and which you must obtain. For the plaintext and more information of the CDC he sees: http://www. The amantadine (1-aminoadamantane, sold as Symmetrel) is a drug anti-virus used both like a anti-virus and antiparkinsonic. Applications Approved It was approved by the Agency of Medecines and Foods in 1976 for the treatment of Influenzavirus To in adults. In 1969 the drug also went open pie accidentally to help to reduce symptoms of Parkinson' drug-induced disease of s and extrapyramidal syndromes. It is a derivative of the adamantane, like rimantadine, a similar drug. As antiparkinsonic he can be used like monotherapy; or along with L-DOPA to deal with the L-DOPA-related fluctuations the motor (duration of i.L-DOPA of the clinical effect, probably related to progressive the neuronal loss) and discinesias L-DOPA-related (the coreiformes movements were associated to the use of long term of L-DOPA, probably related to the chronic pulsating stimulus of the receivers of the dopamine). Applications without mark There have been anecdotal information, based on the investigation by the singer of Dr.William of the University of Harvard, that the amantadine of the under-dose has been used successfully to treat] amantadine ADHD.1 has been demonstrated to release anorgasmia SSRI-induced in some people, although not in all the people. Indirect effect The amantadine has been associated to several indirect effect of the central nervous system, including nervousness, anxiety, the agitation, the insomnia, the difficulty in concentrating, and preexisting exacerbaciones of you disorder of grasping and psychiatric symptoms in patients with schizophrenia or Parkinson' disease of s. These indirect effect are probably due to amantadine' dopaminérgica and adrenérgica activity of s, and in a degree inferior, its activity like anticolinérgico. The cases of the suicidal ideación in patients dealt with amantadine have been described, [2] although this psychiatric adverse event is relatively rare. However, the clinical monitoring of the suicidal ideación in patients in the amantadine is authorized in clinician' the discretion of s, as amantadine has been implied like (biological main the fatal factor of the toxic) in the finished patient suicides.3] Another potential indirect effect is reticularis of livedo, a dermatological reaction that gives rise to the jaspeado one of skin and the network of connection of purpurish of the blood vessels. Mechanism of its effects The mechanism of its effect antiparkinsonic is not understood completely, but it appears to send the dopamine of the nervous completions of the neurons, along with the stimulus of the answer of norepiephrine. In addition, it appears to be a weak antagonist of the NMDA receiver and a anticolinérgico. The mechanism anti-virus seems to be without relation. The drug interferes with a viral protein, the M2 (a channel of the ion), that is necessary so that the viral particle becomes " uncoated" once it is taken within the cell by endocytosis. Erroneous use Recently, the amantadine is disclosed to be used in the poultry keeping of China in a effort to protect the birds against influenza.4 to prepare] in western countries and according to international regulations of the cattle, the amantadine is only approved for the use in human beings. The chickens in China have received 2,4 considered tensions] of a bird influenza (H5N1) in China and Asia South-Eastern is resistant to the amantadine, but the tensions that circulate to another part seem to be sensible. If the resistant tensions of the amantadine of the extension of the virus, the drug of the option in a bud of the bird influenza are probably restricted to one of oseltamivir or of littler and more expensive zanamivir, than they work by a diverse mechanism and they are less probable to drive resistance. Decreasing effectiveness Early in the station of influenza of 2005/2006, the United States ' The Control center of diseases [CDC] much more found indices of resistance of the amantadine to be high that in previous stations. The glance of samples from 26 states rendered the following results: A total of 193 (92,3%) 209 of the influenza A (H3N2) and 2 (25%) of 8 virus of a influenza (H1N1) analyzed contained point mutations giving by result a change of the serina-a-asparragina in amino acid 31 (S31N) of the protein of the M2 that conferred the adamantane resistance.1] An index of the resistance of 92% for the main tension of influenza was called " alarmingly high". The CDC published an alarm to the doctors not to prescribe the amantadine more for season.2] between some Asian countries, A/H3N2 and References Hallowell, Edward M.Ratey, given of the distraction: To leave the majority life with the disorder of attention deficit (2005), pp. Xu, Xiyan; Brilliant, Rick A.Surveillance of the resistance to the adamantanes between a influenza (H3N2) and the virus of A (H1N1) isolated " world-wide;.

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