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Medications

Elexacaftor; Tezacaftor; Ivacaftor oral tablets

What is this medicine?

ELEXACAFTOR; TEZACAFTOR; IVACAFTOR (el EX a KAF tor; TEZ a KAF tor; EYE va KAF tor) is used to treat cystic fibrosis (CF) in patients who have a F508del mutation in their CF gene.

How should I use this medicine?

Take this medicine by mouth with fat-containing foods such as eggs, peanut butter, or cheese pizza. Follow the directions on the prescription label. Do not cut, crush, or chew this medicine. Do not take with grapefruit juice. Take your medicine at regular intervals. Do not take it more often than directed. Do not stop taking except on your doctor's advice.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 12 years of age for selected conditions, precautions do apply.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • changes in vision

  • rash

  • signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin

  • signs and symptoms of low blood sugar such as feeling anxious; confusion; dizziness; increased hunger; unusually weak or tired; increased sweating; shakiness; cold, clammy skin; irritable; headache; blurred vision; fast heartbeat; loss of consciousness

Side effects that usually do not require medical attention (report these to your doctor or health care professional if they continue or are bothersome):

  • diarrhea

  • dizziness

  • gas

  • general ill feeling or flu-like symptoms

  • headache

  • painful menstrual periods

  • sinus congestion

  • stomach pain

What may interact with this medicine?

Do not take this medicine with any of the following medications:

  • certain medicines for seizures like carbamazepine, phenobarbital, phenytoin

  • grapefruit juice

  • rifampin

  • rifabutin

  • St. John's Wort

This medicine may also interact with the following medications:

  • certain antibiotics like clarithromycin, erythromycin, and telithromycin

  • certain medicines for fungal infections like fluconazole, itraconazole, ketoconazole, posaconazole, and voriconazole

  • cyclosporine

  • digoxin

  • everolimus

  • glimepiride

  • glipizide

  • sirolimus

  • tacrolimus

  • warfarin

What if I miss a dose?

It is important not to miss any doses. Talk to your health care professional about what to do if you miss a dose.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 20 to 25 degrees C (68 to 77 degrees F). Throw away any unused medicine after the expiration date.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • kidney disease

  • liver disease

  • an unusual reaction to elexacaftor, tezacaftor, ivacaftor, other medicines, foods, dyes, or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Visit your health care professional for regular checks on your progress. Tell your health care professional 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 medicine.

Tell your health care professional right away if you have any change in your eyesight.

You may get dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand up or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy spells.


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. Copyright© 2020 Elsevier