Zovirax is a highly efficient antiviral medicine launched in the year 1977. Its foremost medical use is to treat infections caused by herpes simplex virus, shingles and chickenpox.

The other name of the pill is Acyclovir which should strictly be administered only by mouth. The other predominant use of the pill is to treat genital and neonatal herpes simplex. The active ingredient of the pill is white in color and comes in crystalline powder form.

The world health organization has listed the Zovirax pill as one required in a basic health system. The medication is available in different brand names.

Important information

The Zovirax antiviral is used for treating shingles, Herpes simplex encephalitis, acute chickenpox, herpes eye infection, and acute mucocutaneous HSV infections. Individuals suffering from herpes of the eye can benefit from taking the pill, since it is found to be more effective than other medicines of the same category.

The Zovirax drug when injected in liquid form can offer tremendous relief from encephalitis and severe genital herpes. The antiviral pill can also be used to treat herpes simplex meningitis and eczema herpeticum. Doctors prescribe the pill for treating infections caused by varicella zoster virus.

Zovirax should be taken for the entire length prescribed even if symptoms begin to improve before the course is over.

The infection being treated with this drug is usually contagious and it is recommended to not touch the infected area or allowing anyone to come in contact with it. Wash your hands immediately if you accidentally touch the infection. Keep the infected area clean and dry always.

Avoid taking Zovirax if you are allergic to Acyclovir, and also inform the prescribing doctor if you have health conditions like kidney disease, a weak immune system, breast-feeding or if you are pregnant .


Zovirax is available in three different forms – tablets, capsules, and oral suspension. The capsule form comes in the dosage strength of 200 mg. The compressed tablet form of this drug is available in the dosage strengths of 400 mg and 800 mg.

When it comes to the Zovirax suspension, each 5 ml of the liquid contains 200 mg of acyclovir. The dosage is decided by healthcare provider by considering the condition being treated and age of the patient.

The Zovirax medication should be taken at the very first instance of noticing symptoms like burning, blisters and tingling. Individuals using the liquid formulation of the pill should properly measure the dose.

At instances of observing weight loss during the course of therapy, it is necessary to inform the doctor, as the recommended dosage strength vary depending on the body weight. Intake of water should be increased so as to ensure optimal functioning of the kidneys.

Missing a dose and Overdose

The missed Zovirax dose should be taken as early as possible unless the timing clashes with the next schedule dose, in which case the missed dose may be skipped. Avoid doubling the doses to make up for the missed dose.

Drug overdose symptoms that can occur are seizures, loss of consciousness, and agitation. Get emergency medical attention in case of overdose.

Side effects

Zovirax can cause kidney ailments in some cases. The probable signs of kidney problem are experiencing difficulty while urinating, tired feelings, shortened breath, swelling in ankles and feet, and little urination. The other common side effects are

  • diarrhea,
  • headache,
  • vomiting,
  • nausea,
  • feeling ill.

Taking the medicine can make a person to easily get bruised, bleed and formation of red or purple pinpoints under the skin.

Relative Contraindications

The Zovirax antiviral drug upon interaction with other drugs trigger unwanted health complications in the body, especially it damages the kidney. Medications to be avoided are Bowel disorder medicine, Antibiotics, injectable osteoporosis medication, probenecid, pain and arthirits medicines liek aspirin, aleve and advil.

The list is bit elongated, however the ones highlighted above are the major category of drugs that interacts with the antiviral medicine apart from prescription drugs, herbal products and certain over-the-counter drugs.


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