Drug information provided by: Merative, Micromedex®

It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.

Do not take this medicine together with products containing rifampin (eg, Rifadin®, Rifamate®, Rifater®, Rimactane®). Using these medicines together may cause serious side effects.

If you have ever had a hepatitis B infection, the virus could become active again during treatment with sofosbuvir, velpatasvir, and voxilaprevir combination. You should be tested for hepatitis B infection before starting treatment with this medicine. Talk with your doctor if you have concerns.

This medicine may cause worsening of liver problems. Tell your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, vomiting, or yellow eyes or skin while using this medicine.

Amiodarone can cause serious side effects (including cardiac arrest, slow heartbeat, or conditions that need a pacemaker) if used together with this medicine or other medicines containing sofosbuvir, or if you have used it recently. This is more likely to occur in patients with heart disease or advanced liver disease. Tell your doctor if you are taking amiodarone before using this medicine.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (eg, St. John's wort) or vitamin supplements.