Refer to a doctor and stop taking this medication immediately if an allergic reaction is experienced.

Signs of an allergic reaction may include:

• Severe rash, hives, or itching of the skin 
• Trouble breathing
• Swelling of any part of the face, neck, arms or legs
• Collapse 

Zovirax tablets and suspension

The most common side effects may include:

• Dizziness 
• Nausea or vomiting 
• Stomach pain
• Diarrhea
• Headache
• Skin reaction after exposure to light
• Tiredness 
• Rash or itching of the skin
• Feeling faint, especially when standing up, with unexplained fever

Not all side effects are listed here. Read the manufacturer’s product insert that comes with the medication. 

Consult a doctor or healthcare provider before using this medication.

Zovirax is the generic name for a medication containing the active ingredient acyclovir, which is indicated for treating certain infections. These infections include:

• Cold sores
• Shingles
• Chickenpox 
• Genital herpes
• Recurrent herpes simplex infection
• Prevention of herpes simplex infection in patients with a weak immune system