Valganciclovir is an antiviral medication used in the treatment and prevention of cytomegalovirus (CMV) infection. It belongs to a class of drugs called nucleoside analogue DNA polymerase inhibitors. Valganciclovir is an oral prodrug of ganciclovir, meaning it is converted into ganciclovir in the body.

Valganciclovir is primarily prescribed to prevent CMV infection in individuals who have received organ transplants, as they are at a higher risk of developing CMV-related complications. It is also used for the treatment of active CMV retinitis, an infection that affects the retina of individuals with weakened immune systems, such as those with HIV/AIDS.


The medication works by inhibiting the replication of the CMV virus, thus preventing its spread and reducing the severity of the infection. It is available in tablet form and is usually taken orally with food.

As with any medication, valganciclovir may cause side effects. Common side effects include nausea, diarrhea, vomiting, headache, and decreased white blood cell count. It can also have more serious side effects, such as bone marrow suppression, kidney problems, and allergic reactions. Regular monitoring of blood cell counts and kidney function is necessary during valganciclovir treatment.


Valganciclovir should be used under the guidance and prescription of a healthcare professional. The dosage and duration of treatment may vary depending on the individual’s condition and response to therapy. It is important to take the medication exactly as prescribed and complete the full course of treatment to achieve optimal results.

It is worth noting that valganciclovir is not effective against other viral infections and should only be used for the treatment of CMV infection as directed by a healthcare provider.


In summary, valganciclovir is an antiviral medication used to prevent and treat CMV infection. It is commonly prescribed for individuals who have undergone organ transplants or those with CMV retinitis. By inhibiting the replication of the CMV virus, valganciclovir helps reduce the risk of complications and manages active infections. However, it is essential to follow the healthcare provider’s instructions and undergo regular monitoring while taking this medication.