Zovirax Ointment (Acyclovir) is a prescription topical ointment used to treat people with herpes simplex virus infections of the lips and face (recurrent herpes labialis), shingles (caused by herpes zoster), and chickenpox. The active ingredient in Zovirax cream is Acyclovir. Acyclovir belongs to the class of drugs called antiviral (topical) drugs. Zovirax exerts its antiviral effect on herpes simplex viruses and varicella-zoster viruses by interfering with DNA polymerase to inhibit DNA replication via chain termination. By this mechanism, Zovirax slows the growth and spread of the herpes virus in the body. Zovirax ointment does not eliminate Herpes simplex virus infection from your body. However, it reduces the severity and duration of cold sore symptoms when they appear.
Manufacturer Information
We currently offer the brand Zovirax Ointment from Canada manufactured by Bausch Health. The generic Acyclovir is also available from Canada by a different manufacturer.
Get medical help immediately if you have any signs of an allergic reaction while taking Zovirax Ointment. The most common side effects of Zovirax Ointment may include:
• Burning sensation at the site of application;
• Drying and flaking at the area of application;
• Dry or cracked lips;
• Erythema or redness;
• Flaky skin;
• Severe itching;
• Stinging
Contact your doctor right away if you have any of the severe side effects, including:
• Breathing difficulties;
• Dizziness;
• Shortness of breath;
• Swelling of face, lips, or tongue;
• Unexplained fever
Before using Acyclovir, tell your doctor or pharmacist if you are allergic to it or valacyclovir or have ever had an allergic reaction to Acyclovir, valaciclovir, propylene glycol, or any of the other ingredients contained in this medication. It would be best not to use Zovirax ointment for any skin infection other than herpes simplex infection. Do not use Zovirax ointment to treat genital herpes infection. Contact your doctor if you have ulcers around your genital area. Avoid touching a cold sore to prevent transferring the disease or making it worse. Carefully apply a thin layer of cream to the affected area, including the outer edges of the cold, sore blisters, as directed by your doctor. If your sore worsens or you notice no improvement, contact your doctor for proper treatment. Do not use more than the recommended dose by your doctor.
Before you start taking this medication, tell your doctor about your medical history, especially if you:
• Are breastfeeding or plan to breastfeed;
• Are pregnant or plan to become pregnant;
• Have an allergic reaction to Zovirax ointment or any other topical antiviral medications;
• Have kidney or liver diseases;
• Have a weak immune system either due to HIV/AIDs or on immunosuppressant
Tell your doctor right away if you become pregnant or think you may be pregnant. Zovirax ointment should not be used during pregnancy or while breastfeeding unless your doctor directs you to. Avoid breastfeeding if you have herpes sores on or near your breast. Acyclovir should not be used in children under 12 years of age. Tell your doctor about all your medications, including prescription, OTC, herbal supplements, and vitamins. There is no known drug interaction with Acyclovir ointment; however, you should monitor it closely when using it with cisplatin, tacrolimus, tenofovir, and probenecid. Zovirax Ointment is not safe for children below 12 years. Store this medication in a cool place and away from the reach of children.