
What is Zovirax?
Zovirax (acyclovir) is an antiviral medication that helps treat infections caused by the herpes virus.
This includes conditions like genital herpes, cold sores, shingles, and chickenpox. Zovirax medication contains the active ingredient acyclovir, which slows down the virus so your body can fight it more easily.
Zovirax does not cure herpes, but it can reduce symptoms like pain, itching, and blisters. If you are dealing with any of these conditions, Zovirax may help you feel better and shorten the time your symptoms last. Talk to your doctor to see if this treatment is right for you.
Zovirax is indicated for treating herpes-related infections in both children and adults. However, it is not for everyone. Zovirax contraindications include an allergy to acyclovir or valacyclovir.
People with kidney problems or a weak immune system should also be careful, as this medication can increase the risk of serious side effects like kidney damage or blood disorders.
Drink plenty of water while using Zovirax tablets and tell your doctor about any other medications you are taking. This will ensure that the treatment works well for you.
How Does Zovirax Work?
Zovirax works by stopping the herpes virus from multiplying in the body. The active ingredient, acyclovir, targets the virus directly. When you take Zovirax medication, your body turns acyclovir into a special form that blocks the virus from copying its DNA.
This slows the infection and reduces symptoms such as pain, itching, and sores. Zovirax tablets do not completely remove the virus, but shorten the outbreak and make it less painful.
Even when you feel better, the herpes virus stays in your body and can return later, so ongoing care is important.
Zovirax Dose and Usage
Zovirax is available in several forms, including oral capsules, tablets, and liquid suspension. You should take it exactly as your doctor tells you.
Begin treatment as soon as you notice the first signs of infection. Drink plenty of water while taking this medication to help protect your kidneys.
Dosage Form and Strengths of Zovirax
Oral Forms
- 200 mg oral capsules
- 400 mg oral tablets
- 800 mg oral tablets
- 200 mg per 5 mL oral suspension
Topical Forms
- Zovirax cream 5% (5 g tube)
- Zovirax ointment 5% (available in 5 g, 15 g, and 30 g tubes)
The oral suspension is often used for children or for people who have trouble swallowing tablets or capsules. Shake the bottle well before each dose and measure carefully using a proper measuring device.
Zovirax cream is typically used to treat cold sores on the face and lips. The ointment may be used for genital herpes or other herpes-related skin infections.
Apply a thin layer to the affected area as directed. Wash your hands before and after application to avoid spreading the virus.
How to Take Zovirax?
Follow these steps for safe and effective use of Zovirax, based on the form you are using:
General Guidelines
- Start Zovirax at the first sign of symptoms such as tingling, burning, or itching.
- Take oral tablets or capsules with a full glass of water.
- Take doses at evenly spaced intervals throughout the day.
- Complete the full course of treatment, even if symptoms improve early.
- Stay well-hydrated while taking this medication.
Oral Suspension (Liquid Form)
- Shake the bottle well before each use.
- Measure each dose using a dosing syringe or a proper measuring device, not a kitchen spoon.
- Use exactly as prescribed by your doctor.
Cream (for Cold Sores)
- Apply to the affected area 5 times a day for 4 days.
- Use a clean finger or applicator.
- Wash your hands before and after applying.
- Do not apply inside the mouth, eyes, or nose.
Ointment (for Genital Herpes or HSV Skin Infections
- Apply to the affected area every 3 hours (6 times per day) for 7 days.
- Use enough to cover all lesions (about one-half inch of ointment per 4 square inches).
- Apply with a gloved hand or a cotton applicator to prevent the spread of the virus.
- Wash your hands before and after application.
Recommended Zovirax Dosage for Different Conditions and Populations
Zovirax Dosage for Adults
- For treating shingles (Herpes Zoster): 800 mg of medication is recommended every 4 hours, five times daily, for 7 to 10 days. Taking this medication early in the outbreak can help reduce pain and promote faster healing.
- Initial episode of genital herpes: Take 200 milligrams every 4 hours, 5 times a day for 10 days.
- Recurrent genital herpes: The recommended dosage is 400 milligrams taken twice a day for up to 12 months. This approach helps to stop outbreaks before they begin. Another option is to take 200 milligrams three to five times a day. Some individuals may follow this option if their doctor advises it.
- Recurrent genital herpes: Take 200 milligrams every four hours, five times a day, for five days. Start taking this medication as soon as symptoms begin. This helps to shorten the duration of the outbreak.
- Chickenpox (adults and children over 40 kg): Adults and children who weigh over 40 kilograms should take 800 milligrams of medication four times a day for five days to treat chickenpox. This dosage helps to make chickenpox symptoms less severe and allows you to recover more quickly.
Zovirax Dosage for Children
- Chickenpox (2 years and older, weighing less than 40 kg): For children aged 2 years and older who weigh less than 40 kilograms, the recommended dose for chickenpox is 20 milligrams for every kilogram of body weight. Administer this dose four times a day for five days. The dosage depends on the child’s weight and should not exceed 800 milligrams per dose.
Zovirax Dosage for People with Kidney Problems
If your kidneys are not working well, your doctor will change the dose so the medication does not build up in your body.
- If kidney function is normal, the exact 200 mg every 4 hours should be maintained. If kidney function is impaired, the dosage should be adjusted to 200 mg every 12 hours instead.
- If your kidney function is normal, maintain the same dose of 400 mg twice daily. If it is reduced, take 200 mg every 12 hours instead.
- If you usually take 800 mg every 4 hours and your kidney function is normal, you should keep the same dose. If your kidney function is slightly low, take 800 mg every 8 hours. If your kidney function is very low, you should take 800 mg every 12 hours.
- If you are on hemodialysis, you should take an extra dose of your medication after each dialysis session. This will replace the medication that the dialysis process removes during the treatment.
- If you are on peritoneal dialysis, you usually do not need an extra dose. Your doctor will adjust the main dose if necessary.
Zovirax Side Effects
While Zovirax works well for many people, this medication can cause side effects in some cases.
Common Zovirax side effects include nausea, headache, and diarrhea. Some people may also feel dizzy or tired.
Although rare, Zovirax long-term side effects or severe reactions, such as changes in behavior, confusion, or kidney problems, may happen and need immediate medical attention.
Always talk to your doctor if you notice anything unusual while taking this medication.
Common Side Effects
These side effects are usually mild and may go away as your body gets used to the medication:
- Nausea
- Vomiting
- Diarrhea
- Headache
- Dizziness
- Feeling tired or low energy
- Feeling unwell or sick overall
- Pain or irritation where the medication is applied
- Redness on the skin
- Mild rash
Severe Side Effects
These side effects are rare but can be serious. Contact your doctor right away if you notice any of these:
- Confusion or trouble thinking clearly
- Hallucinations or seeing things that are not there
- Unusual drowsiness or extreme tiredness
- Trouble speaking or moving
- Seizures or shaking
- Trouble passing urine or changes in how often you urinate
- Swelling in the face, lips, or throat
- Trouble breathing
- Signs of a severe allergic reaction, such as itching, rash, or swelling
Warnings and Precautions for Zovirax
Zovirax is generally safe when used as prescribed, but it can cause serious problems in some people.
Before starting treatment, patients must understand when this medication might be risky and how to use it safely.
Zovirax side effects and possible long-term risks should be considered, especially in people with kidney issues, weak immune systems, or those who are pregnant or breastfeeding.
Always follow the doctor’s instructions and report any unusual symptoms right away.
- Do not take Zovirax if you have ever had an allergic reaction to acyclovir or valacyclovir.
- Take Zovirax by mouth only. Do not use it in any other way unless your doctor tells you.
- Kidney problems, sometimes serious or even life-threatening, have happened in people taking Zovirax.
- People with weak immune systems have reported serious blood problems, like clots or low platelets, while using Zovirax.
- If your kidneys do not work well, your doctor may lower your dose to prevent side effects.
- Be careful if you take other medications that may affect your kidneys, which may raise the risk of kidney damage.
- Drink enough water while taking Zovirax to help protect your kidneys.
- Zovirax may cause confusion, sleepiness, or other nervous system problems, especially in people with kidney issues or older adults.
- If you are pregnant, talk to your doctor. Zovirax should only be used if the benefit outweighs the risk to the baby.
- If you are breastfeeding, ask your doctor before using Zovirax. A small amount of the drug can pass into breast milk.
- Zovirax is not a cure for genital herpes. It may help reduce symptoms, but it will not prevent the spread of the infection.
- To avoid spreading genital herpes, do not have sexual contact when sores or symptoms are present.
- You can still spread herpes even without symptoms. Follow your doctor’s advice to reduce the risk.
- Start treatment for herpes zoster (shingles) as soon as possible, ideally within 72 hours of rash onset.
- For chickenpox, Zovirax works best when started within 24 hours after the rash begins.
- Zovirax is not proven to be safe for children under 2 years old.
- Older adults may experience more side effects, such as nausea, dizziness, or confusion. Due to weaker kidneys, they may need a lower dose.
Drug Interactions With Zovirax
Drug interactions with Zovirax can affect how the medication works or increase the risk of side effects.
It is important to tell your doctor about all the medications, vitamins, or herbal supplements you take.
Some drugs can make kidney problems worse when taken with Zovirax. Always check with your doctor or pharmacist before starting or stopping any medication.
- Dichlorphenamide
- Foscarnet
- Leflunomide
- Nitisinone
- Teriflunomide
- Fosphenytoin
- Phenytoin
- Valproic Acid
- Advil
- Motrin
- Aleve
- Medications for infections
- Cancer treatments
- Medications for osteoporosis
- Drugs used after organ transplants
- Medications for bowel problems
- Medications for high blood pressure
- Pain relievers
- Arthritis medications
- Prescription vitamins
- Herbal products
- Over-the-counter supplements
Alternatives to Zovirax
If Zovirax is not the right option, your doctor may recommend alternative medications.
These treatments are effective against infections such as cold sores, genital herpes, shingles, and chickenpox. They work in similar ways to combat viruses and support your recovery.
- Valtrex (valacyclovir)
- Famvir (famciclovir)
- Denavir (penciclovir)
- Abreva (docosanol)
- Sitavig (acyclovir buccal tablet)
- Prednisone
Order Zovirax Online and SAVE
Ordering Zovirax online can help patients who are struggling with high medication costs.
Many people face hard choices when it comes to their health because of the price of prescription drugs.
We understand how stressful this can be. Pharma Giant makes getting the medication you need, including Zovirax, easier and more affordable without leaving your home.
When you order from our trusted platform, you can see the full Zovirax price before you pay. There are no hidden fees. We work with licensed Canadian pharmacies to bring down the Zovirax cost while making sure you still get safe, quality medication.
Whether you need treatment for cold sores, shingles, or other viral infections, we can deliver Zovirax to your door in just a few business days.
You can also buy up to a 3-month supply to reduce your total Zovirax cost. We also offer secure packaging, fast shipping, and full support if you need help.
Choosing to order Zovirax online means you take control of your health and your budget. Let us help make your treatment easier and more affordable.
How to Order Zovirax Online?
- Search for Zovirax, choose the strength you need, and click Buy to add it to your cart. You can keep adding more items to your cart if you need other products.
- Click Continue Checkout and enter your name, address, and payment information. Use code PGSAVE10 to get 10% off your first order.
- Send us your prescription. You can upload it on the website, email it to info@pharmagiant.com, or fax it to 1-888-562-8159.
Frequently Asked Questions
Disclaimer
Pharma Giant provides medical information to help you better understand medications and medical conditions.This content is for informational use only and does not replace advice from a licensed medical practitioner. Consult your doctor or pharmacist before starting or changing any medication. All our partners follow strict safety standards set by their country’s health authorities to make sure you receive safe and high-quality medications.





