What should I tell my care team before I take this medication?
They need to know if you have any of these conditions:
-Kidney disease
-Liver disease
-An unusual reaction to elexacaftor, tezacaftor, ivacaftor, 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:
-Certain medications for seizures, such as carbamazepine, phenobarbital, phenytoin
-Grapefruit juice
-Rifabutin
-Rifampin
-St. John's Wort
This medication may also interact with the following:
-Certain antibiotics, such as clarithromycin, erythromycin, and telithromycin
-Certain medications for fungal infections, such as fluconazole, itraconazole, ketoconazole, posaconazole, and voriconazole
-Cyclosporine
-Digoxin
-Everolimus
-Glimepiride
-Glipizide
-Sirolimus
-Tacrolimus
-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. Tell your care team if your symptoms do not start to get better or if they get worse.
Your vision and blood may be tested before and during use of this medication.
Tell your care team right away if you have any change in your eyesight.
What are the most serious risks of this medication?
This medication can cause serious liver injury. Your care team will check your liver with blood tests before and during treatment. Stop this medication and call your care team right away if you have symptoms of liver injury. These may include feeling weak or tired, loss of appetite, nausea, belly pain, light-colored stool, dark yellow or brown urine, or yellowing skin or eyes.