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Learn MoreAntiviral
Brand names:
Zovirax®, Sitavig®
Other names:
Aciclovir; ACV; Acycloguanosine
Often used for:
Viral infections
Acyclovir is an antiviral medication. It works to control illness due to certain viruses in patients with weak immune systems. It may be used for herpes simplex virus (HSV), varicella (chicken pox), herpes zoster (shingles), or cytomegalovirus (CMV). When applied to the skin, acyclovir may be used for cold sores and genital warts.
Acyclovir can cause tissue damage if it leaks from the vein during IV administration. Patients may have irritation and skin damage at the IV site. Let a caregiver know if there is burning during administration.
Patients receiving acyclovir may have regular tests including blood draws and urine tests to check blood counts and monitor liver and kidney function. Patients receiving acyclovir by IV will be monitored for neurotoxicity. Problems such as tremor, confusion, agitation, and changes in consciousness can happen, especially in patients who receive high doses or have decreased kidney function.
May be taken as a tablet or capsule by mouth
May be taken as a liquid by mouth
May be given as a liquid into a vein by IV
May be applied on the skin
Not all patients who take acyclovir will experience these side effects. Common side effects are in bold, but there may be others. Please report all suspected side effects to your doctor or pharmacist.
Be sure to discuss these and other recommendations with your doctor or pharmacist.