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Drug Safety-related Labeling Changes (SrLC)

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OXBRYTA (NDA-213137)

(VOXELOTOR)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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08/18/2023 (SUPPL-12)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Hypersensitivity Reactions

Drug reaction with eosinophilia and systemic symptoms (DRESS) has been reported in postmarketing experience with OXBRYTA [see Adverse Reactions (6.12)]. Patients who develop a combination of skin rash, fever, peripheral eosinophilia, and internal systemic organ involvement (e.g., hepatic, renal, pulmonary) while receiving OXBRYTA should undergo medical evaluation.

Advise patients of the signs and symptoms of severe hypersensitivity reactions, including DRESS. If hypersensitivity reactions occur, discontinue OXBRYTA and administer appropriate medical therapy. Do not reinitiate OXBRYTA in patients who experience these symptoms with previous use.

6 Adverse Reactions

6.1 Clinical Trials Experience

Additions and/or revisions underlined:

Dosage modifications (dose reduction or dosing interruption) due to adverse reactions occurred in 14% (12/88) of patients who received OXBRYTA 1,500 mg. The adverse reactions requiring dosage modification included rash (4.5%), diarrhea (3.4%), headache (2.3%), nausea (2.3%), abdominal pain (1.1%), and drug hypersensitivity (1.1%).

6.2 Postmarketing Experience

Newly added subsection:

The following adverse reactions have been identified during postapproval use of OXBRYTA. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure:

  • Drug reaction with eosinophilia and systemic symptoms (DRESS), Pruritis, Angioedema (including swelling of eyelid, face edema, lip swelling, and periorbital swelling).

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

Hypersensitivity Reactions

Advise patients that serious hypersensitivity reactions including DRESS may occur, and to notify their healthcare providers if they develop generalized rash, urticaria, shortness of breath, facial swelling, swelling around their eyes, lips, or tongue, fever, fatigue, muscle and/or joint pain, swollen glands, and eosinophilia [see Warnings and Precautions (5.1)]. Inform patients that some severe hypersensitivity reactions may affect their internal organs (such as liver, kidneys, lungs) and their blood cells. Advise patients to stop OXBRYTA if a severe hypersensitivity reaction is suspected.

Advise patients to:

  • Do not swallow whole, cut, crush, or chew OXBRYTA tablets for oral suspension. Disperse OXBRYTA tablets for oral suspension in room temperature clear drink (such as drinking water, clear soda, apple juice, clear electrolyte drinks, clear flavored drinks, or clear sports drinks) before administration. The amount of liquid needed to disperse the tablets for oral suspension will depend on the dose (number of tablets prescribed) [see Dosage and Administration (2.7)].

This product's label may have been updated. For most recent prescribing information, please visit www.pfizer.com. For medical information about OXBRYTA, please visit www.pfizermedinfo.com or call 1- 800-438-1985.

 

PATIENT INFORMATION

Additions and/or revisions underlined:

How should I take OXBRYTA?

  • If you take OXBRYTA tablets for oral suspension: See the detailed Instructions for Use on how to prepare and take your dose. You must mix the OXBRYTA tablets for oral suspension in room temperature clear drink, such as drinking water, clear soda, apple juice, clear electrolyte drinks, clear flavored drinks, or clear sports drinks, right before taking it. Do not swallow whole, cut, crush, or chew the tablets for oral suspension.

What are the possible side effects of OXBRYTA?

OXBRYTA can cause serious side effects, including:

  • Severe skin rash and serious allergic reactions. Treatment with OXBRYTA may cause severe skin reactions and serious allergic reactions. The organs in your body may also be affected, such as your liver, kidneys or lungs, and your blood cells.

  • Stop taking OXBRYTA, and tell your healthcare provider or get emergency medical help right away if you develop any of the following signs or symptoms during treatment:

  • rash          

  • shortness of breath (difficult breathing)

  • hives

  • swelling of your face, around your eyes, lips, or tongue

  • high temperature (fever)

  • lack of energy and tiredness (fatigue)

  • swollen glands (lymph nodes)

  • muscle or joint aches

  • trouble swallowing

You may also report side effects to Pfizer Inc. at 1-800-438-1985.

Inactive Ingredients:

OXBRYTA tablets: colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, and sodium lauryl sulfate. The 500 mg tablet film coating contains: polyethylene glycol 3350, polyvinyl alcohol, talc, titanium dioxide, and yellow iron oxide. The 300 mg tablet film coating contains: black and red iron oxide, polyethylene glycol 3350, polyvinyl alcohol, talc, and titanium dioxide.