Ganciclovir is preferred over acyclovir in the following condition:
* Ganciclovir is the drug of choice for CMV infections. * Acyclovir is highly effective against Herpes simplex and Varicella zoster (chicken pox and herpes zoster) but it has very little activity against CMV.
Herpes simplex keratitis
Herpes zoster
Chickenpox
Cytomegalovirus retinitis in AIDS patients
Anti-Viral Drugs