Zovirax is an antiviral medication used primarily to treat infections caused by herpes simplex viruses. Its active ingredient acyclovir works by being converted into an active form that inhibits viral dna polymerase. By blocking dna polymerase the drug prevents the virus from replicating its genetic material. This interruption stops the spread of the infection in the skin mucous membranes and nervous system cells. The inhibited replication allows the immune system to clear existing viral particles and reduces symptom duration. Consequently Zovirax provides therapeutic relief for outbreaks of herpes simplex while having minimal effect on uninfected host cells.

Zovirax is an antiviral medication used to treat herpes simplex and varicella zoster infections. It works by being converted inside infected cells to a triphosphate form that interferes with viral enzymes. The triphosphate form inhibits viral dna polymerase preventing the virus from replicating its genetic material. This inhibition stops the spread of virus in the skin and mucous membranes. The drug selectively targets viral dna synthesis while sparing uninfected host cells. Pharmacodynamically the active metabolite produces prolonged suppression of viral replication. The overall pharmacological profile provides effective antiviral activity with minimal impact on normal cellular processes.

One frequently reported side effect is a mild headache that typically resolves without medical intervention. A second common effect is temporary fatigue that some individuals experience shortly after exposure. A third noted symptom is occasional nausea that usually subsides within a short period. A fourth side effect can be brief dizziness lasting only a few minutes. A fifth frequently observed reaction is mild skin irritation at the application site. A sixth commonly mentioned effect is short term digestive discomfort that often fades over time.

Headache is frequently reported among users of certain medications. Nausea often occurs as a mild and temporary reaction. Drowsiness may be experienced especially after initial doses. Some individuals notice dry mouth which typically resolves with hydration. Fatigue is commonly observed during the early stages of treatment. Muscle aches can appear but are usually mild and short lived. Diarrhea may develop and generally improves without intervention.