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Capsules: 200 milligrams;
Tablets: 400 milligrams,
Tablets: 800 milligrams;
Ointment: 5% (15gm).

No Prescription

Zovirax is prescribed to treat initial genital herpes infections and to treat patients with recurrent (6 episodes per year) severe genital herpes. Zovirax reduces the pain and the number of lesions in the initial case, and decreases the frequency and severity in those with recurrent infections. In the treatment of shingles, Zovirax reduces pain, shortens the healing time, and limits the spread of virus and the formation of new lesions. Zovirax can be prescribed to treat chicken pox and acts to reduce healing time, limit the number of lesions, and reduce fever if prescribed within the first 24 hours after the onset of the disease.
Zovirax ointment is prescribed topically to treat initial genital herpes where it has been shown to decrease pain, reduce healing time, and limit the spread of the infection.
Zovirax liquid, capsules, and tablets are prescribed in the treatment of certain infections with herpes viruses. These include genital herpes, shingles, and chickenpox. This drug may not be appropriate for everyone, and its use should be thoroughly discussed with your doctor. Zovirax ointment is prescribed to treat initial episodes of genital herpes and certain herpes simplex infections of the skin and mucous membranes. Zovirax cream is prescribed for herpes cold sores on the lips and face only.
Some doctors use Zovirax, along with other drugs, in the treatment of AIDS, and for unusual herpes infections such as those following kidney and bone marrow transplants.


Zovirax is excreted mainly by the kidney and dosages need to be reduced in patients with kidney dysfunction.

Side Effects.

Rare side effects in patients treated short-term with Zovirax are:
- Headache;
- Nausea;
- Vomiting;

Long-term treatment has the additional potential for rash and diarrhea.

Zovirax side effects that you should report to your health care professional or doctor as soon as possible:
- Vomiting;
- Vaginal Inflammation;
- Stinging;
- Stinging;
- Skin Rash;
- Nausea;
- Mild Pain;
- Itchy Spots;
- Itching;
- Inflammation;
- Hives;
- General Feeling Of Bodily Discomfort;
- Eczema (Inflamed Irritated Patches Of Skin);
- Dry Or Flaky Skin;
- Dry Or Cracked Lips;
- Burning;
- Diarrhea;
- Burning;
- Allergic Reactions;



For Genital Herpes

The usual dose is one 200-mg capsule or 1 teaspoonful of liquid every 4 hours, 5 times daily for 10 days. If the herpes is recurrent, the usual adult dose is 400 mg (two 200-mg capsules, one 400-mg tablet or 2 teaspoonfuls) 2 times daily for up to 12 months.

If genital herpes is intermittent, the usual adult dose is one 200-mg capsule or 1 teaspoon of liquid every 4 hours, 5 times a day for 5 days. Therapy should be started at the earliest sign or symptom.

Ointment: Apply ointment to affected area every 3 hours, 6 times per day, for 7 days. Use enough ointment (approximately one-half inch ribbon of ointment per 4 square inches of surface area) to cover the affected area.

For Herpes Cold Sores

Apply Zovirax cream to the affected area 5 times a day for 4 days. Therapy should begin as soon as possible after the first sign of a cold sore such as a bump, tingling, redness, or itchiness.

For Herpes Zoster (Shingles)

The usual adult dose is 800 mg (one 800-mg tablet or 4 teaspoonfuls of liquid) every 4 hours, 5 times daily for 7 to 10 days.

For Chickenpox:

The usual adult dose is 800 mg 4 times a day for 5 days.

If you have a kidney disorder, the dose will need to be adjusted by your doctor.


The usual dose for chickenpox in children 2 years of age and older is 20 mg per 2.2 pounds of body weight taken orally 4 times daily, for a total of 80 mg per 2.2 pounds, for 5 days. A child weighing more than 88 pounds should take the adult dose.

The safety and effectiveness of oral Zovirax have not been established in children under 2 years of age. However, your doctor may decide that the benefits of this medication outweigh the potential risks. The safety and effectiveness of Zovirax ointment in children have not been established. Zovirax cream has not been studied in children less than 12 years old.


Your doctor will start you at the low end of the dosage range, since older adults are more apt to have kidney problems or other disease, or to be taking other medications.

(c) 2017