Orkambi
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Questions & Answers
Side Effects & Adverse Reactions
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Legal Issues
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FDA Safety Alerts
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Manufacturer Warnings
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FDA Labeling Changes
There are currently no FDA labeling changes available for this drug.
Uses
ORKAMBI is a combination of lumacaftor and ivacaftor indicated for the treatment of cystic fibrosis (CF) in patients age 12 years and older who are homozygous for the F508del mutation in the CFTR gene. If the patient's genotype is unknown, an FDA-cleared CF mutation test should be used to detect the presence of the F508del mutation on both alleles of the CFTR gene.
Limitations of Use
The efficacy and safety of ORKAMBI have not been established in patients with CF other than those homozygous for the F508del mutation.
History
There is currently no drug history available for this drug.
Other Information
The active ingredients in ORKAMBI tablets are lumacaftor, which has the following chemical name: 3-[6-({[1-(2,2-difluoro-1,3-benzodioxol-5-yl)cyclopropyl]carbonyl}amino)-3-methylpyridin-2-yl]benzoic acid, and ivacaftor, a CFTR potentiator, which has the following chemical name: N-(2,4-di-tert-butyl-5-hydroxyphenyl)-1,4-dihydro-4-oxoquinoline-3-carboxamide. The molecular formula for lumacaftor is C24H18F2N2O5 and for ivacaftor is C24H28N2O3. The molecular weights for lumacaftor and ivacaftor are 452.41 and 392.49, respectively. The structural formulas are:
lumacaftor
ivacaftor
Lumacaftor is a white to off-white powder that is practically insoluble in water (0.02 mg/mL). Ivacaftor is a white to off-white powder that is practically insoluble in water (<0.05 microgram/mL).
ORKAMBI is available as a pink, oval-shaped, film-coated tablet for oral administration containing 200 mg of lumacaftor and 125 mg of ivacaftor. Each ORKAMBI tablet contains 200 mg of lumacaftor and 125 mg of ivacaftor, and the following inactive ingredients: cellulose, microcrystalline; croscarmellose sodium; hypromellose acetate succinate; magnesium stearate; povidone; and sodium lauryl sulfate. The tablet film coat contains carmine, FD&C Blue #1, FD&C Blue #2, polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide. The printing ink contains ammonium hydroxide, iron oxide black, propylene glycol, and shellac.
Sources
Orkambi Manufacturers
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Vertex Pharmaceuticals Incorporated
![Orkambi (Lumacaftor And Ivacaftor) Tablet, Film Coated [Vertex Pharmaceuticals Incorporated]](/wp-content/themes/bootstrap/assets/img/loading2.gif)
Orkambi | Vertex Pharmaceuticals Incorporated
2.1 Dosing Information in Adults and Children Age 12 Years and OlderAdults and pediatric patients age 12 years and older: two tablets (each containing lumacaftor 200 mg/ivacaftor 125 mg) taken orally every 12 hours with fat-containing food. Examples of appropriate fat-containing foods include eggs, avocados, nuts, butter, peanut butter, cheese pizza, whole-milk dairy products (such as whole milk, cheese, and yogurt), etc. If a patient misses a dose and remembers the missed dose within 6 hours, the patient should take the dose with fat-containing food. If more than 6 hours elapsed after the usual dosing time, the patient should skip that dose and resume the normal schedule for the following dose. A double dose should not be taken to make up for the forgotten dose [see Clinical Pharmacology (12.3) and Patient Counseling Information (17)].
2.2 Dosage Adjustment for Patients with Hepatic ImpairmentNo dose adjustment is necessary for patients with mild hepatic impairment (Child-Pugh Class A). A dose reduction to 2 tablets in the morning and 1 tablet in the evening (lumacaftor 600 mg/ivacaftor 375 mg total daily dose) is recommended for patients with moderate hepatic impairment (Child-Pugh Class B).
Studies have not been conducted in patients with severe hepatic impairment (Child-Pugh Class C), but exposure is expected to be higher than in patients with moderate hepatic impairment. Therefore, use with caution at a maximum dose of 1 tablet in the morning and 1 tablet in the evening (lumacaftor 400 mg/ivacaftor 250 mg total daily dose), or less, in patients with severe hepatic impairment after weighing the risks and benefits of treatment [see Use in Specific Populations (8.6), Clinical Pharmacology (12.3), and Patient Counseling Information (17)].
2.3 Dosage Adjustment for Patients Taking CYP3A InhibitorsNo dose adjustment is necessary when CYP3A inhibitors are initiated in patients already taking ORKAMBI. However, when initiating ORKAMBI in patients currently taking strong CYP3A inhibitors (e.g., itraconazole), reduce ORKAMBI dose to 1 tablet daily (lumacaftor 200 mg/ivacaftor 125 mg total daily dose) for the first week of treatment. Following this period, continue with the recommended daily dose.
If ORKAMBI is interrupted for more than 1 week and then re-initiated while taking strong CYP3A inhibitors, patients should reduce ORKAMBI dose to 1 tablet daily for the first week of treatment re-initiation. Following this period, continue with the recommended daily dose.
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