Drug Interactions between Viekira XR and vilazodone

Ritonavir may increase the blood levels and effects of vilazodone. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects of vilazodone such as diarrhea, nausea, vomiting, dry mouth, dizziness, or sleep disturbances. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Vilazodone may increase the blood levels of dasabuvir, one of the components of your hepatitis C medication. In some cases, this may increase the risk of side effects such as irregular heart rhythm and liver problems. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact. You should seek immediate medical attention if you develop fever, chills, joint pain or swelling, unusual bleeding or bruising, skin rash, itching, loss of appetite, fatigue, nausea, vomiting, dark colored urine, light colored stools, and/or yellowing of the skin or eyes, as these may be signs and symptoms of liver damage. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.