$0,46 per pill

Active Ingredient: Acyclovir

Dosage: 200mg, 400mg, 800mg

Short General Description of the Drug Zovirax

Zovirax (acyclovir) is an antiviral medication commonly prescribed for the treatment of infections caused by the herpes virus. It belongs to the class of drugs known as nucleoside analogs, which work by interfering with the replication and spread of the virus in the body.

Being one of the most widely used antiviral drugs, Zovirax has proven effectiveness in treating various forms of herpes infections, including genital herpes, cold sores (herpes labialis), shingles (herpes zoster), and chickenpox (varicella). It can also be used for the prevention of recurrent herpes outbreaks.

How Does Zovirax Work?

Zovirax acts by inhibiting the viral DNA polymerase enzyme, which is essential for the replication of the herpes virus. By targeting this enzyme, Zovirax prevents the virus from multiplying, thus decreasing the severity and duration of symptoms associated with herpes infections.

In addition, Zovirax helps in reducing the risk of complications related to herpes infections, such as secondary bacterial infections and neurological complications.

Usage and Dosage

The usage and dosage of Zovirax may vary depending on the type and severity of the infection, as well as the individual’s response to the treatment. It is crucial to follow the instructions provided by the healthcare professional and adhere to the prescribed dosage.

Zovirax is available in various forms, including tablets, capsules, suspension, and cream. The route of administration and duration of treatment may differ based on the condition being treated.

For oral forms (tablets and capsules), Zovirax is typically taken with or without food, as indicated by the healthcare provider. It is important to stay hydrated during the course of treatment and complete the full prescribed course, even if symptoms improve before the medication is finished.

Zovirax cream is applied topically to the affected area, usually five times a day, for a specified duration. It is important to wash hands before and after applying the cream to prevent the spread of infection.

Possible Side Effects

Like any medication, Zovirax may cause side effects in some individuals. Common side effects include nausea, vomiting, diarrhea, headache, dizziness, and rash. These side effects are generally mild and tend to resolve on their own.

Serious side effects are rare but can occur. If experiencing any unusual or severe symptoms, it is essential to seek immediate medical attention. These may include decreased urination, signs of kidney problems, allergic reactions, or neurological symptoms such as confusion or seizures.

Precautions and Interactions

Before starting Zovirax treatment, it is important to inform the healthcare provider about any existing medical conditions, allergies, or ongoing medications. Certain conditions and drug interactions may affect the safety and effectiveness of Zovirax.

Pregnant women, breastfeeding mothers, or individuals with compromised immune systems should exercise caution and consult a healthcare professional before using Zovirax.

It is advisable to avoid close physical contact with individuals who have active herpes infections to prevent transmission. Additionally, practicing good personal hygiene, such as regular handwashing, can help reduce the risk of contracting or spreading the herpes virus.


Zovirax (acyclovir) is a widely used antiviral drug for the treatment of various herpes infections. With its mechanism of action inhibiting viral replication, Zovirax provides relief from symptoms, reduces the risk of complications, and helps in preventing recurrent outbreaks. Understanding the proper usage, potential side effects, and necessary precautions is crucial for the safe and effective use of this medication.

Use of Zovirax (acyclovir) in the Treatment of Viral Infections

Zovirax (acyclovir) is a widely used antiviral medication that is primarily used to treat infections caused by the herpes simplex virus (HSV). It belongs to a class of drugs known as nucleoside analogues, which work by inhibiting the replication of the virus.

Treating Herpes Simplex Virus (HSV)

Zovirax is most commonly prescribed for the treatment of herpes simplex viral infections, including both genital herpes and cold sores. Genital herpes is a sexually transmitted infection caused by HSV type 2 (HSV-2), while cold sores are caused by HSV type 1 (HSV-1).

When used to treat genital herpes outbreaks, Zovirax can help reduce the duration and severity of symptoms such as painful blisters, itching, and burning sensations. It can also help prevent the formation of new sores and decrease the risk of transmission to sexual partners.

In cases of cold sores, Zovirax can be applied topically on the affected areas to speed up the healing process and alleviate discomfort. It is important to start treatment as soon as the first signs of a cold sore appear for optimal effectiveness.

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Prevention and Treatment of Shingles

Zovirax can also be used to treat shingles, a viral infection caused by the varicella-zoster virus (VZV). Shingles typically manifests as a painful rash that occurs along a nerve path and is often accompanied by flu-like symptoms.

By taking Zovirax within 72 hours of the appearance of the rash, individuals can reduce the risk of developing postherpetic neuralgia, a long-lasting nerve pain that may occur after a shingles outbreak. Zovirax can also help speed up the healing process and minimize the severity of symptoms.

Other Uses

In addition to its primary use in treating HSV and shingles, Zovirax may be prescribed for other viral infections as determined by a healthcare professional. These may include but are not limited to:

  • Chickenpox (varicella)
  • Epstein-Barr virus (EBV) infections, such as infectious mononucleosis
  • Cytomegalovirus (CMV) infections

It is important to note that Zovirax is not effective against all types of viral infections, and its use should always be based on a healthcare professional’s diagnosis and recommendations.


Zovirax (acyclovir) is a highly effective antiviral medication that plays a crucial role in the treatment of herpes simplex viral infections, shingles, and other related conditions. It helps alleviate symptoms, speed up the healing process, and reduce the risk of complications. If you believe you may need Zovirax or have any concerns regarding viral infections, it is essential to consult a healthcare professional for appropriate diagnosis and treatment.


$0,46 per pill

Active Ingredient: Acyclovir

Dosage: 200mg, 400mg, 800mg

Uses of Zovirax: Treating and Preventing Viral Infections

Zovirax (acyclovir) is a well-known antiviral drug that is widely used for the treatment and prevention of various viral infections. Acyclovir is particularly effective against herpes simplex virus (HSV) types 1 and 2, varicella-zoster virus (VZV), and Epstein-Barr virus (EBV). It works by inhibiting the replication of these viruses, thereby helping to control the symptoms and reduce the duration of the infection.

Treatment of Herpes Simplex Virus Infections

Zovirax is primarily prescribed for the treatment of herpes simplex virus infections, both genital and oral. Genital herpes, caused by HSV-2, is a sexually transmitted infection that can cause painful blisters and sores in the genital area. Zovirax helps in reducing the severity and duration of genital herpes outbreaks, providing relief to the affected individuals.

Additionally, Zovirax is also used to treat oral herpes, which is mainly caused by HSV-1. Oral herpes infections commonly manifest as cold sores or fever blisters on or around the lips. By applying Zovirax cream or ointment directly to the affected area, the healing process can be accelerated, and discomfort can be minimized.

Management and Prevention of Shingles

Zovirax is also highly effective against the varicella-zoster virus (VZV), which causes chickenpox and shingles. Shingles, or herpes zoster, is a painful rash that usually develops on one side of the body, often in the form of a band or strip of blisters. By taking Zovirax tablets orally, individuals suffering from shingles can experience reduced pain and shorter healing time.

Moreover, Zovirax can be used as a preventive measure against recurrent episodes of shingles, especially for individuals over the age of 50. By continuously taking Zovirax, the frequency and severity of shingles outbreaks can be significantly reduced, leading to an improved quality of life.

Other Uses

Besides its primary applications, Zovirax may also be prescribed for the treatment of other viral infections, such as Epstein-Barr virus (EBV) infections. EBV is responsible for causing infectious mononucleosis, also known as mono or glandular fever. Zovirax helps in reducing the symptoms associated with EBV infections, including fever, sore throat, and fatigue.

Furthermore, Zovirax eye ointment is utilized for the treatment of herpes simplex keratitis, an infection of the cornea caused by HSV. The ointment provides relief from pain, redness, and inflammation, promoting faster healing and preventing potential vision complications.


Zovirax is an invaluable antiviral medication that is widely used for the treatment and prevention of various viral infections. Whether it’s genital or oral herpes, shingles, or other viral diseases, Zovirax plays a crucial role in relieving symptoms, reducing the duration of the infection, and preventing future outbreaks. Being a trusted and well-studied drug, Zovirax continues to be a go-to medication for healthcare professionals worldwide in their fight against viral infections.

Using Zovirax for Treating Herpes Infections

Herpes infections can be distressing and uncomfortable, causing painful blisters and sores on the skin and mucous membranes. Fortunately, there are effective medications available to manage these outbreaks and expedite the healing process. Zovirax (acyclovir) is one such antiviral drug widely utilized for its proven effectiveness in treating herpes infections.

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How Zovirax Works

Zovirax belongs to a class of medicines called nucleoside analogs, which work by inhibiting the replication of the herpes virus. Acyclovir, the active ingredient in Zovirax, is converted to its active form inside the infected cells. Once activated, it prevents the virus from multiplying, reducing both the severity and duration of herpes outbreaks.

Common Uses of Zovirax

Zovirax is primarily prescribed for the treatment of genital herpes, also known as herpes simplex virus type 2 (HSV-2). This sexually transmitted infection can cause recurrent outbreaks of painful genital sores. By taking Zovirax at the first sign of an outbreak, individuals can experience faster healing, reduced pain, and a decrease in the length of the episode.

This antiviral medication is also used for the management of herpes labialis, commonly referred to as cold sores or fever blisters. These blister-like sores typically appear on or around the lips and are caused by the herpes simplex virus type 1 (HSV-1). Zovirax can help alleviate symptoms, reduce the risk of complications, and speed up the healing process.

In addition to its oral form, Zovirax is available as a topical cream or ointment for the treatment of herpes labialis. Applying the cream directly to the affected area can provide localized relief, promote healing, and prevent the cold sores from spreading.

Important Considerations

Prior to initiating Zovirax treatment, it is crucial to consult a healthcare professional and disclose any medical conditions, allergies, or medications being taken. Certain individuals, such as those with compromised immune systems, may require adjusted dosages or alternative treatment options.

While Zovirax effectively manages herpes outbreaks, it does not cure the infection or prevent future recurrences. The medication is typically used during active outbreaks and is not recommended for continuous, long-term use. Patients should follow their healthcare provider’s instructions regarding the appropriate dosage and duration of treatment.

It is important to note that Zovirax may cause side effects, although they are generally mild and temporary. Common side effects include headache, nausea, diarrhea, and dizziness. If any unusual or severe side effects occur, immediate medical attention should be sought.

For further information on Zovirax, its usage guidelines, and potential drug interactions, authoritative sources such as the U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) can provide valuable insights and guidance.

In conclusion, Zovirax is a trusted antiviral medication often prescribed for managing herpes infections. Its active ingredient, acyclovir, helps control the replication of the herpes virus, reducing the severity and duration of outbreaks. By following healthcare provider’s instructions, individuals can effectively alleviate symptoms and promote faster healing. Always consult a healthcare professional for personalized advice and guidance on using Zovirax for herpes infections.

5. Dosage and administration of Zovirax

Zovirax (acyclovir) is available in various forms such as tablets, capsules, suspension, and ointment. The dosage of Zovirax can vary depending on the medical condition being treated and the individual patient. It is essential to follow the prescribed dosage and administration instructions provided by your healthcare provider.

5.1 Oral dosage

For the treatment of herpes infections, the recommended oral dosage of Zovirax is as follows:

  • Adults: The usual dosage is 200 mg taken orally every 4 hours, five times a day, for a total of 1,000 mg daily. The treatment usually lasts for 5-10 days.
  • Children (2 years and older): The dosage is based on body weight. The usual recommended dose is 20 mg per kilogram of body weight, up to a maximum of 800 mg per dose, taken orally four times a day.

5.2 Topical administration

Zovirax ointment is indicated for the treatment of recurrent herpes labialis (cold sores) on the lips and face. It should be applied topically to the affected area every 3 hours, 6 times a day, for 7 days.

5.3 Special populations

For individuals with impaired renal function, the dosage of Zovirax should be adjusted based on the patient’s renal function test results. Patients should consult their healthcare provider for appropriate dosing recommendations.

5.4 Missed dose

If a dose of Zovirax is missed, it should be taken as soon as remembered. However, if it is almost time for the next scheduled dose, the missed dose should be skipped, and the regular dosing schedule should be continued. Doubling the dose is not recommended.

5.5 Additional information

Zovirax should be taken with plenty of water and can be taken with or without food. It is important to complete the full course of treatment, even if symptoms improve earlier. The effectiveness of Zovirax may diminish if dosing is interrupted or not completed according to the prescribed schedule.

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For detailed information on dosage and administration, please refer to the Zovirax product label available from the manufacturer’s official website: www.zovirax.com/dosage.

Remember, it is essential to consult with your healthcare provider or pharmacist before starting or altering the dosage of any medication.


$0,46 per pill

Active Ingredient: Acyclovir

Dosage: 200mg, 400mg, 800mg

6. Possible side effects of Zovirax

Zovirax (acyclovir) is generally considered safe and well-tolerated when used as directed. However, like any medication, it can cause side effects in some individuals. It’s important to be aware of these potential side effects and consult your healthcare provider if you experience any concerning symptoms.

Common side effects

Common side effects of Zovirax may include:

  • Headache
  • Nausea
  • Vomiting
  • Diarrhea
  • Dizziness
  • Fatigue

If these side effects persist or worsen, it is recommended to seek medical attention.

Less common side effects

Although less common, some individuals may experience the following side effects:

  • Allergic reactions such as rash, itching, swelling, or severe dizziness
  • Changes in vision
  • Confusion or hallucinations
  • Tremors or shaking
  • Difficulty speaking or understanding speech
  • Unsteady movement
  • Unusual bleeding or bruising
  • Pale skin
  • Difficulty urinating

If you develop any of these less common side effects, it is important to seek immediate medical attention.

Serious side effects

While rare, Zovirax can potentially cause serious side effects. These may include:

  • Severe skin reactions, such as Stevens-Johnson syndrome or toxic epidermal necrolysis
  • Signs of kidney problems, such as changes in urine output or blood in the urine
  • Signs of liver problems, such as yellowing of the skin or eyes, dark urine, or persistent nausea
  • Signs of a low platelet count, such as unusual bleeding or bruising
  • Signs of anemia, such as fatigue, weakness, or pale skin
  • Seizures

If you experience any of these serious side effects, seek immediate medical attention or call emergency services.

Note that this is not an exhaustive list of possible side effects. If you have any concerns about the side effects of Zovirax, it is always best to consult with a healthcare professional or pharmacist.

For more information on Zovirax and its potential side effects, you can refer to the FDA-approved drug label or consult with your healthcare provider.

Point 7: Potential side effects of Zovirax and precautions to consider

While Zovirax (acyclovir) is a generally safe and effective antiviral medication, it is essential to understand the potential side effects and take necessary precautions when using it. Here are some important points to consider:

1. Common side effects:

  • Nausea and vomiting: Some individuals may experience mild gastrointestinal discomfort.
  • Headache: Zovirax can occasionally cause headaches, although they are typically mild.

It is important to note that not everyone will experience these side effects, and they usually resolve without medical intervention.

2. Serious side effects:

Although rare, serious side effects can occur, and immediate medical attention should be sought if any of the following symptoms occur:

  • Allergic reactions: Signs of an allergic reaction may include hives, difficulty breathing, swelling of the face, lips, tongue, or throat.
  • Unusual bleeding or bruising: Zovirax can reduce the number of blood cells, leading to unusual bleeding or bruising.
  • Signs of kidney problems: Inform your doctor if you experience changes in urine frequency, volume, or color, or if you notice swelling in your hands, ankles, or feet.

3. Precautions before using Zovirax:

Before taking Zovirax, it is crucial to discuss the following aspects with your healthcare provider:

  • Allergies: Inform your doctor about any allergies you have, particularly to medications, before starting Zovirax.
  • Medical history: Make sure to share your medical history, especially if you have kidney problems, liver disease, a weakened immune system, or any other pre-existing conditions.
  • Pregnancy and breastfeeding: Notify your doctor if you are pregnant, planning to become pregnant, or breastfeeding, as the safety of Zovirax during these periods should be evaluated.
  • Other medications: Discuss any other prescription or over-the-counter medications, vitamins, or herbal supplements you are taking to avoid potential drug interactions.

It is important to follow your healthcare provider’s instructions carefully and not exceed the recommended dosage and duration of treatment. If you have any concerns or questions about using Zovirax, consult your doctor or pharmacist for personalized advice.

Category: Anti Viral

Tags: Zovirax, Acyclovir

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