Which medication is commonly used to treat cytomegalovirus (CMV)?

Valganciclovir is a commonly used medication for treating cytomegalovirus (CMV) infections, particularly in immunocompromised patients such as those with HIV/AIDS or organ transplant recipients. This drug is an antiviral agent that effectively inhibits viral DNA synthesis, thus reducing the viral load and helping to control the infection.

On the other hand, Acyclovir, while effective against herpes viruses like HSV and VZV, is not specifically indicated for CMV. Cephalosporins such as Ceftazidime do not have antiviral properties and are used primarily to treat bacterial infections. Ribavirin is generally used for viral infections like hepatitis C and some respiratory viruses but is not effective against CMV. Thus, Valganciclovir is the preferred choice for CMV due to its targeted action against this specific virus.