Tamiflu - an antiviral medication is oral, inhibits the action of enzymes involved in the reproduction and spread of influenza viruses in humans. It is used for the treatment and prevention of acute respiratory infections caused by influenza virus types A and B.
The mechanism of action of Tamiflu
Tamiflu (INN - oseltamivir phosphate) - this is an antiviral agent which is produced by the pharmaceutical company F. Hoffmann-La Roche Ltd., Switzerland in capsules of 75 mg in the form of a powder for suspension for oral administration of 30 grams in a bottle with a measured glass and dosing syringe.
Tamiflu - a drug which is a prodrug - active substance (oseltamivir carboxylate) is formed by the decomposition of oseltamivir phosphate in humans, in particular in the liver under the influence of hepatic enzymes. Oseltamivir carboxylate inhibits the action of the neuraminidase enzyme of influenza virus types A and B.
Neuraminidase accelerate biological processes release of new virus particles from infected epithelial cells of the human respiratory tract, their penetration into the healthy cells of the respiratory epithelium and the further spread of the viral infection in the body. All these processes are suppressed when receiving Tamiflu
Tamiflu - an antiviral drug for the treatment and prevention of influenza
. Is suppressed and the process of virus isolation from the patient, which greatly reduces the risk of transmission of infection to others.
Tamiflu reduces the duration of the disease, including the duration of the acute period of the disease accompanied by high fever and signs of intoxication. When taking this drug reduced the number and severity of bacterial complications of influenza - inflammatory diseases of the bronchi, lungs, upper respiratory tract (sinusitis, sinusitis, otitis).
How effective is Tamiflu for other viral infections of the respiratory system (in addition to influenza viruses A and B) has not been studied.
When Tamiflu prophylactically greatly reduced risk of influenza, and if the contact with the patient is still very sick, the disease is easier and does not last so long.
Tamiflu is output as an active metabolite in the urine (mostly) and faeces.
Indications and contraindications
Indication for Tamiflu (it is taken by a doctor) are the treatment and prevention of influenza types A and B in adults and children older than one year of disease duration less than two days.
Tamiflu is contraindicated if you are hypersensitive drug components, severe renal impairment, and children up to a year. With caution and only for health reasons (on prescription), this drug is used to treat pregnant women as clinical research in this cohort of patients was conducted. With care it is used and during lactation (excreted in human milk).
Children under the age of thirteen Tamiflu is recommended to take a suspension.
Side effects and possible overdose
Tamiflu is generally good tolerated, but possible occurrence of side effects. Quite often there are side effects from the gastrointestinal tract, such as nausea, vomiting, diarrhea, stomach pain. Rarely there may be gastrointestinal bleeding, liver function abnormalities, which are expressed mainly in the form of changes in laboratory parameters (liver function tests), and (very rarely) in the form of hepatitis.
On the part of the central nervous system may cause headaches, sleep disorders
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, Fatigue, irritability, weakness, seizure, psychosis.
On the part of the respiratory system may cause cough, epistaxis, nasal congestion, runny nose, bronchitis
Bronchitis - protection if the body has malfunctioned
, Otitis media, sinusitis
Sinusitis - when a puncture is required
, Sinusitis, bronchial asthma attack.
Perhaps the emergence of conjunctivitis, acute herpes, inflammation of lymph nodes, various allergic reactions.
An overdose of Tamiflu is not described, but it can be assumed increased side effects of this drug in the form of nausea, vomiting, headaches and disorders of consciousness.
Not Tamiflu described as incompatible with taking any other drug.
Tamiflu - an antiviral drug is effective for the treatment and prevention of influenza types A and B. The data on the effectiveness of this drug in the treatment of viral infections of the respiratory tract caused by other infectious agents, the company - the manufacturer is not available.
Galina Romanenko