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Zovirax Ointment 5% (Acyclovir)

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What is Generic?

What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Zovirax Ointment is a trusted topical medication designed to treat herpes simplex virus (HSV) infections, including cold sores (herpes labialis) and genital herpes (herpes simplex). Manufactured by GlaxoSmithKline, this ointment contains acyclovir, a potent antiviral agent that works by stopping the growth and spread of the herpes virus. Zovirax Ointment effectively reduces the severity and duration of herpes outbreaks, providing relief from painful symptoms and promoting faster healing.

Before you buy Zovirax ointment, it is crucial that you talk to your healthcare provider about potential side effects and affordability.

Fact Table
Formula C8H11N5O3
License US FDA (and others)
Bioavailability Not Available
Legal status OTC/Rx (varies by country)
Chemical Name Acyclovir
Elimination half-life 2.5-3.3 hours
Dosage (Strength) 5% Ointment
Pregnancy Consult a doctor
Brands Zovirax, others
Protein binding 9-33%
PubChem CID 135398548
MedlinePlus a681039
ATC code D06BB03, S01AD03 (others possible)
DrugBank DB00787
KEGG D00187
Routes of administration Topical

Buy Zovirax Ointment 5% (Acyclovir) online from online Canadian Pharmacy |


For optimal results, follow these directions carefully:

  • Wash your hands thoroughly before and after applying the ointment and make sure that the affected area is clean before application.
  • Apply a thin layer of Zovirax dosage to the affected area, typically five times a day (every four hours) for five days.
  • Avoid rubbing the ointment into the skin vigorously.
  • Wash your hands after applying the ointment to prevent the spread of the virus.

If symptoms persist or worsen after five days of treatment, consult your healthcare provider for further evaluation and guidance.


Zovirax Ointment uses acyclovir as the active ingredient.


Inform your healthcare provider if you have a history of hypersensitivity or allergic reactions to acyclovir or any other ingredients in the ointment.

Consult your healthcare provider before using Zovirax Ointment if you are pregnant, planning to become pregnant, or breastfeeding.

Avoid applying the ointment to the eyes, as it may cause irritation.

If using Zovirax Ointment for genital herpes, refrain from sexual activity while lesions are present to prevent transmission of the virus to your partner.

Zovirax Ointment is for external use only.


Zovirax Ointment may interact with certain medications or substances. Inform your healthcare provider about all prescription, over the counter, and herbal products you are using, including Other Antiviral Medications, Immunosuppressants and Probenecid. Your healthcare provider can help assess the risks and benefits of using Zovirax Ointment alongside other medications or substances.

Side Effects

While Zovirax Ointment is generally well-tolerated, some individuals may experience side effects. Common side effects may include:

Mild burning, stinging, or itching at the application site.

Temporary dryness or flakiness of the skin may occur.

Some users may experience redness or inflammation of the skin.

Occasional headaches have been reported during treatment with Zovirax Ointment.

Frequently Asked Questions about Zovirax Ointment 5% (Acyclovir)

What is Zovirax Ointment 5% (Acyclovir)?

Zovirax Ointment 5% is a topical antiviral medication used to manage initial episodes of herpes infections. It helps reduce the pain and severity of herpes lesions or sores.

How does Zovirax Ointment work?

Acyclovir, the active ingredient in Zovirax Ointment, is an antiviral drug that stops the growth of certain viruses.

How should I use Zovirax Ointment?

Apply the Ointment to the affected area(s) four to six times daily for up to ten days. Use a finger cot or rubber glove when applying acyclovir to prevent the spreading of the infection.

What are the side effects of Zovirax Ointment?

When applied, this medication may cause mild, temporary burning or stinging. A severe allergic reaction to this drug is rare.

Does Zovirax Ointment cure herpes infections?

No, this medication does not cure herpes or prevent the infection from coming back.

Can Zovirax Ointment prevent the spread of herpes to others?

No, Zovirax Ointment will not stop the spread of herpes to others.

What precautions should I take when using Zovirax Ointment?

Before using acyclovir, tell your doctor or pharmacist if you are allergic to it, valacyclovir, or any other allergies.

What should I do if Zovirax Ointment gets in my eyes?

If this happens, wash right away with plenty of water.

What should I do if my condition does not improve after seven days of treatment or if it worsens?

Tell your doctor if your condition does not improve after seven days of treatment or if it worsens.

Can I use Zovirax Ointment if I am pregnant or breastfeeding?

Tell your doctor if you are pregnant, plan on getting pregnant, or are breastfeeding.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.