The instructions for the antiviral drug Acyclovir indicate recommended dosages for herpetic lesions, but there is no information on how to use the immunostimulant for colds and flu. The doctor, given the course of the disease (period of going to the hospital, symptoms, possible complications), can adhere to the manufacturer's recommendations or prescribe a different treatment regimen. In this case, it is better to trust a specialist who, thanks to his knowledge, will be able to determine the need for the drug for each specific patient, taking into account the individual and age-related characteristics of his body.
It is worth noting immediately that the drug in the form of a powder, used for intravenous infusions, is practically not prescribed for influenza, not to mention a mild cold. Usually, prescriptions are about tablets (used both for prophylaxis and for medicinal purposes) and their combined use together with external agents (ointment or cream). If there are no flu symptoms, and only a herpetic rash is present, only local treatment is possible, although its effectiveness is lower compared to the combined one.
According to the instructions Acyclovir tablets must be taken in dosages corresponding to the real cause of the disease. For the treatment of infections provoked by the herpes virus type 1 or 2, and for the prevention of relapse of the disease, the same single dose is used - 200 mg. But in the case of primary infection, this dose should be taken at intervals of 4 hours (about 5 times a day). If we are talking about secondary manifestations of infection (relapse), provoked, for example, by a flu virus or other pathology that weakened the immune system, the frequency of administration is reduced to 4 times a day (the interval between doses of the tablets is about 6 hours).
In patients with significantly reduced immunity (immunodeficiency due to HIV, bone marrow transplantation, etc.), a single dose can be increased to 400 mg without changing the frequency of taking the medicine. BUT if there are severe kidney diseases that reduce the excretion of the drug from the body, we can’t talk about increasing the dose. The treatment is individualized.
The course of prophylactic treatment with Acyclovir for colds and flu rarely exceeds 5 days.
Chicken pox caused by herpes simplex virus type 3 requires higher dosages of the drug. The effective single dose is 800 mg, and the frequency of administration remains the same as for the prevention of herpes type 1 and 2, i.e. 5 times a day at regular intervals.
The course of chickenpox in adults is usually severe, so a weekly course of treatment is required. For the same duration of the course, they also count on the treatment of shingles.
For colds and flu, the doctor may prescribe Acyclovir in tablets in slightly different dosages. If symptoms of herpes have appeared or the doctor is aware of a previous infection with herpes, the drug can be prescribed according to the following schemes:
- 4-5 times a day, 200 mg,
- 400 mg twice daily
- 200 mg three times a day.
If the drug is prescribed for preventive purposes, i.e. There are no symptoms of herpes and there is no information about its presence in the body, doctors are often limited to low dosages: 2 or 3 times a day, 200 mg each.
The drug in the form of ointment or cream is applied to the foci of the herpetic rash 5 times a day, trying to adhere to the four-hour interval, for 5 (sometimes more) days. It is prescribed only with the appearance of external signs of the herpes virus. For prevention, these funds are not used.
"Acyclovir" for children with colds and flu
"Acyclovir" in tablets is intended for the treatment of patients older than 2 years, while a child of this age with colds is offered the dose recommended by adults, i.e. 200 mg 4-5 times a day (unless the doctor has prescribed another regimen). For children 1-2 years old, the medicine can be given in a dosage half that recommended (100 mg 4-5 times a day), but if there are no symptoms of herpes, it can be even less.
But is it necessary to give a small child a drug for the prevention of herpes, if he does not have such symptoms? You need to understand that the immune system in babies is formed at least 3 years old. During this period, the body's defenses cannot yet resist the pressure of the infection, so any contact with it can become decisive in the development of herpetic disease.
And if, in addition, the body is further weakened by the influenza virus, then what can prevent the herpes virus from entering it and starting active activity? The drug "Acyclovir" is an antiherpetic agent and an immunostimulant in one person. It is hardly possible to come up with prevention better than such a complex action, especially since the drug does not affect healthy cells and does not have a noticeable toxic effect.
If we are talking about the treatment of chickenpox, requiring high dosages, the appointment of the drug should be approached based on the age of the patient. Babies older than 2, but younger than 6 years of age, are prescribed the drug in a halved dosage. A single dose of 400 mg is offered 4 times a day.
For children over 6 years of age, a dosage of 800 mg is considered safe, which should also be given 4 times a day.
Since the course of chickenpox in children is easier than in adults, a 5-day treatment course is enough.
Doctors suggest treating local manifestations of herpes with colds and flu in children using external agents: ointments or creams. The dosage for children under 12 years of age is calculated based on the fact that for every square centimeter of the baby's body, no more than 10 mg of the drug can be used. For older children, the dosage can be increased fivefold, i.e. No more than 50 mg per 1 sq.cm.
Apply ointment or cream to the foci of the rash 4-5 times a day with an interval of 4 hours, if the kidney function in the child is not impaired. Otherwise, the dosage and treatment regimen is set individually. Usually, 5 days of local treatment are sufficient to obtain the desired effect, but if necessary, the course duration is increased.