GLECAPREVIR; PIBRENTASVIR (glek A pre vir; pi BRENT as vir) treats infections caused by the hepatitis C virus. It is a combination of two antiviral medications. It will not treat colds, the flu, or infections caused by bacteria.

How should I use this medication?

Take this medication by mouth. Take it as directed on the prescription label at the same time every day. Swallow the pellets whole. Open the sealed packet and put the contents in 1 to 2 teaspoons of food (e.g., peanut butter, chocolate hazelnut spread, cream cheese, thick jam, or Greek yogurt). Swallow the medication and food right away. Do not chew the medication or food. Keep taking this medication unless your care team tells you to stop. This medication comes with INSTRUCTIONS FOR USE. Ask your pharmacist for directions on how to use this medication. Read the information carefully. Talk to your pharmacist or care team if you have questions. Talk to your care team about the use of this medication in children. While it may be prescribed for children as young as 3 years for selected conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once. NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If your next dose is to be taken in less than 6 hours, then do not take the missed dose. Take the next dose at your regular time. Do not take double or extra doses.

Where should I keep my medication?

Keep out of the reach of children and pets. Store at or below 30 degrees C (86 degrees F). Get rid of any unused medication after the expiration date. To get rid of medications that are no longer wanted or have expired: -Take the medication to a medication take-back program. Check with your pharmacy or law enforcement to find a location. -If you cannot return the medication, check the label or package insert to see if the medication should be thrown out in the garbage or flushed down the toilet. If you are not sure, ask your care team. If it is safe to put it in the trash, empty the medication out of the container. Mix the medication with cat litter, dirt, coffee grounds, or other unwanted substance. Seal the mixture in a bag or container. Put it in the trash.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.

What side effects may I notice from receiving this medication?

Side effects that you should report to your care team as soon as possible: -Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat -Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome): -Diarrhea -Fatigue -Headache -Nausea

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What should I tell my care team before I take this medication?

They need to know if you have any of these conditions: -Diabetes (high blood sugar) -HIV or AIDS -Other liver disease -An unusual or allergic reaction to glecaprevir, pibrentasvir, other medications, foods, dyes, or preservatives -Pregnant or trying to get pregnant -Breast-feeding

What may interact with this medication?

Do not take this medication with any of the following: -Atazanavir -Elagolix -Rifampin This medication may also interact with the following: -Certain medications for cholesterol, such as atorvastatin, lovastatin, simvastatin -Certain medications for diabetes, such as glipizide or glyburide -Certain medications for seizures, such as carbamazepine or phenytoin -Cyclosporine -Dabigatran -Darunavir -Digoxin -Efavirenz -Estrogen and progestin hormones -Lopinavir -Ritonavir -St. John's wort -Warfarin

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medication?

Visit your care team for regular checks on your progress. Discuss any new symptoms with your care team. You will need to have important blood work done while taking this medication. If you have had hepatitis B in the past, talk to your care team. Taking this medication could cause the hepatitis B virus to become active again. This medication may increase blood sugar. The risk may be higher in patients who already have diabetes. Ask your care team what you can do to lower your risk of diabetes while taking this medication.

What are the most serious risks of this medication?

Before you take this medicine, tell your healthcare provider if you ever had hepatitis B. This medicine can cause hepatitis B to flare-up or return. If that happens, you will need to see a specialist and may need treatment. Your liver function will be monitored while you take this medicine.