Remantadine is an antiviral drug based on adamantane. The drug is indicated for the treatment of many varieties of the influenza A virus. This drug is also used to treat herpes simplex I and II species, spring-summer Russian and Central European tick-borne encephalitis virus. The drug is available in tablets, coated with a coating and in syrup( assigned to children).
Remantadine is a derivative of adamantane: an antiviral agent is effective against various tick-borne encephalitis viruses( in particular the spring-summer Russian from the group of arboviruses and Central European), Herpes simplex 1 and 2 types, strains of the influenza A virus. This drug has immunomodulatory and antitoxic properties.
The polymer structure ensures a continuous circulation of the drug in the body, therefore this drug can be used as a therapeutic as well as preventive agent.
Remantadin suppresses the early stage of a specific reproduction( from the moment the virus enters the cell to the original transcription of RNA).The drug also induces the formation of interferons gamma and alpha, enhances the functional activity of lymphocytes, which are natural killers( NK cells), B-lymphocytes and T-lymphocytes. Increases the pH of the endosome( although it is a weak base) that have a vacuole membrane, and that surround the viral particles when the latter enter the cell. Prevention of acidification in vacuoles blocks the reunification of the virus with the endosome membrane, thus preventing the entry of the viral genetic material into the cytoplasm of the cell.
The drug is also capable of suppressing the exit from the cell of viral particles( stops the transcription of the viral genome).
Remantadin as a prophylactic agent at a dose of 200 mg( daily) reduces the likelihood of flu, the serological response and symptoms of influenza. The therapeutic effect is to a small extent manifested when the drug is used after the first symptoms of influenza began to develop( this is the first 18 hours).
The drug is absorbed from the gastrointestinal tract slowly enough. Most of the remantadine is metabolically intensified. From the blood plasma the drug on average is excreted within 24-36 hours. This drug is excreted together with urine - less than 15% unchanged, approximately 20% - hydroxyl metabolites. In the event that the patient suffers from renal insufficiency, the half-life will be 48-72 hours.
Indications for use
Prevention of influenza in adults, especially during periods of epidemics.
Prevention of treatment and early treatment of influenza in adults and children( 7 years and older).
Prevention of tick-borne encephalitis, which carries a viral etiology.
Dosage and administration of
The drug should be taken orally after a meal. For treatment:
Day 1 - three times a day for 2 tablets;
2nd-3rd day - three times a day for 1-2 tablets.
For the prevention of influenza: 1 tablet for up to 7 days with systematic contact with the sick and up to 20 days - with episodic.
Side effect of
There may be flatulence, epigastric pain, blood levels of bilirubin may increase. Also, headaches, insomnia, impaired concentration, dizziness, nervousness are possible.
- Acute liver disease
- Hypersensitivity to
- chronic and acute kidney disease
The use of this drug may cause an aggravation of accompanying chronic diseases. Older patients with arterial hypertension should take the drug carefully, as the likelihood of hemorrhagic stroke increases.
If there is a history of anticonvulsant therapy and epilepsy, the use of remantadine may increase the risk of an epileptic fit. Therefore, in this case remantadine is prescribed in a dose of 100 mg per day( not more) in parallel with anticonvulsant drugs.
If the flu was caused by a type B virus, remantadine will have an antitoxic effect.
Remantadin - instructions for use
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Remtandin appeared on sale in 1965.Then a group of American scientists who tried to find a fairly effective medicine for influenza, and identified such a useful substance. The drug is gaining special popularity right now, because the flu virus is constantly mutating, and to fight it, new medicines are needed. Before taking any medication, it is necessary to consult with your doctor and read the instructions, which set out the rules for taking the drug, its side effects and doses.
The main component of which Remantadine is composed is adamantane. It equally effectively influences various strains of the influenza virus, as well as herpes and encephalitis( the carrier of the latter are mites).Immediately after it enters the body, the effect of the drug on toxins begins.
The drug acts solely on parts of the tissues of the cells of the virus in such a way that they lose the ability to reproduce. Thanks to this, not only the viral activity decreases, but also the protective forces of the human body increase. Because of the peculiarity of the substance, it accumulates in the tissues, it can be used not only for the treatment of viral diseases, but also for the prevention of influenza. ARVI and similar diseases.
The medicine after its ingestion has a property slowly, but completely absorbed in the human intestine. Remantadine is accumulated in the liver and after a while it is excreted by the kidneys. Usually released in the form of tablets, other forms do not exist and most likely such drugs are fake.
What helps Remantadine?
You can use the drug in the treatment of influenza type A, and also as a preventive measure against the disease.
In the cold season and the epidemic period it is recommended to take medicine to strengthen the body's immune system and to resist illnesses.
Remantadine in some cases can be prescribed by a doctor as a prophylactic drug against tick-borne encephalitis of viral etiology.
Dosage and admission regulations
As prevention during periods of the epidemic, adults and children over 7 years of age should take 1-2 tablets once a day for 4 weeks. To protect yourself from viral encephalitis, the medication is taken orally by 2 tablets, the duration of the course is 5 days.
For the treatment of influenza, Remantadin should take three tablets 3 times on the first day of the disease, two 2 times - on the second and third day. On the fourth or fifth day, it is recommended to reduce the amount to 2 tablets, which are taken once a day. For children, the dose will be 1 tablet twice a day for 5 days.
Patients with hypertension and all suffering from arteriosclerosis of blood vessels should take the medicine very carefully and only after consulting with the doctor in charge. The drug may cause the disease to worsen, and the elderly have a risk of hemorrhagic stroke.
If a person is ill with type B influenza, then Remantadine will have an antitoxic effect on the body. In the case of direct contact with patients, and also at the time of the spread of the virus in the team or room, it is recommended to take the medicine for prophylactic action. Best of all, if the course of prevention will be about 10 days - during this time in the human body will develop antibodies to the virus. Before taking it, you should carefully read the instructions to avoid side effects.
Do not use Remantadine when:
Hypersensitivity to constituents of the drug.
If the patient has kidney disease.liver.
With increased thyroid function.
It is better not to take medicine for pregnant women, as well as women during lactation and children under 7 years.
Side effects when taking the drug from the gastrointestinal tract may be nausea and vomiting, dry mouth and flatulence, and in addition:
Headache and chronic fatigue.
Difficulties with concentration.
Increased excitability and causeless anxiety.
All symptoms disappear after stopping the medication and are usually caused by excess dosage. During the period of drug treatment it is better to avoid activities that require a rapid response, you need to drive the car very carefully. Also, it is necessary to avoid activities that require increased attention from the patient.
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