Maribavir is an antiviral medicine used to treat cytomegalovirus (CMV) infection in people 12 years and older weighing at least 77 lbs (35 kg) who have received an organ transplant.

This medicine is used when an infection or disease does not respond to treatment with ganciclovir, valganciclovir, cidofovir or foscarnet.

Maribavir may also be used for purposes not listed in this medication guide.

Tell your doctor if you have:

• end-stage kidney disease (including if you are on dialysis); or
• severe liver disease.

Some drugs should not be used with maribavir. Your treatment plan may change if you also use: carbamazepine, phenytoin or phenobarbital.

Tell your doctor if you are pregnant or breastfeeding.

Use Maribavir Oral (Livtencity) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

• low blood cell counts--fever, chills, tiredness, mouth sores, skin sores, easy bruising, unusual bleeding, pale skin, cold hands and feet, feeling light-headed or short of breath; or
• kidney problems--little or no urination, swelling in your feet or ankles, feeling tired or short of breath.

Common side effects may include:

• vomiting, nausea, diarrhea;
• tiredness; or
• changes in your sense of taste.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Follow your doctor's instructions about any restrictions on food, beverages, or activity.