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09 February 2004

Acyclovir (Zovirax®)

An antiviral drug used in the treatment of herpes simplex virus 1 (fever blisters, cold sores), herpes simplex virus 2 (genital herpes) and herpes zoster (shingles). Acyclovir comes in the form of pills, ointment or injection. The drug functions as a nucleoside analogue, but must be converted to an active (phosphated) form by the thymidine kinase enzyme produced only by cells infected by certain herpes viruses, including varicella zoster virus (shingles) and herpes simplex-1 and -2. Acyclovir causes few side effects, occasionally nausea, diarrhoea or headaches. It is now available in a generic form.

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An antiviral drug used in the treatment of herpes simplex virus 1 (fever blisters, cold sores), herpes simplex virus 2 (genital herpes) and herpes zoster (shingles). Acyclovir comes in the form of pills, ointment or injection. The drug functions as a nucleoside analogue, but must be converted to an active (phosphated) form by the thymidine kinase enzyme produced only by cells infected by certain herpes viruses, including varicella zoster virus (shingles) and herpes simplex-1 and -2. Acyclovir causes few side effects, occasionally nausea, diarrhoea or headaches. It is now available in a generic form.
 
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