Ibrance

1 INDICATIONS AND USAGE

INDICATIONS & USAGE SECTION

2 DOSAGE AND ADMINISTRATION

DOSAGE & ADMINISTRATION SECTION

3 DOSAGE FORMS AND STRENGTHS

DOSAGE FORMS & STRENGTHS SECTION

125 mg tablets: Oval, light purple, film-coated tablets debossed with "Pfizer" on one side and "PBC 125" on the other side. 100 mg tablets: Oval, green, film-coated tablets debossed with "Pfizer" on one side and "PBC 100" on the other side. 75 mg tablets: Round, light purple, film-coated tablets debossed with "Pfizer" on one side and "PBC 75" on the other side.

4 CONTRAINDICATIONS

CONTRAINDICATIONS SECTION

None.

5 WARNINGS AND PRECAUTIONS

WARNINGS AND PRECAUTIONS SECTION

6 ADVERSE REACTIONS

ADVERSE REACTIONS SECTION

The following clinically significant adverse reactions are described elsewhere in the labeling: • Neutropenia [see Warnings and Precautions (5.1) ] • ILD/Pneumonitis [see Warnings and Precautions (5.2) ]

7 DRUG INTERACTIONS

DRUG INTERACTIONS SECTION

Palbociclib is primarily metabolized by CYP3A and sulfotransferase (SULT) enzyme SULT2A1. In vivo, palbociclib is a time-dependent inhibitor of CYP3A.

8 USE IN SPECIFIC POPULATIONS

USE IN SPECIFIC POPULATIONS SECTION

11 DESCRIPTION

DESCRIPTION SECTION

IBRANCE tablets for oral administration contain 125 mg, 100 mg, or 75 mg of palbociclib, a kinase inhibitor. The molecular formula for palbociclib is C 24 H 29 N 7 O 2 . The molecular weight is 447.54 daltons. The chemical name is 6-acetyl-8-cyclopentyl-5-methyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}pyrido[2,3- d ]pyrimidin-7(8 H )-one, and its structural formula is: Palbociclib is a yellow to orange powder. At or below pH 4, palbociclib behaves as a high-solubility compound. Above pH 4, the solubility of the drug substance reduces significantly. Inactive Ingredients: Microcrystalline cellulose, colloidal silicon dioxide, crospovidone, magnesium stearate, succinic acid, HPMC 2910/hypromellose, titanium dioxide, triacetin, and FD&C Blue #2/Indigo Carmine Aluminum Lake. In addition, the 75 mg and 125 mg tablets contain red iron oxide and the 100 mg tablets contain yellow iron oxide.

12 CLINICAL PHARMACOLOGY

CLINICAL PHARMACOLOGY SECTION

13 NONCLINICAL TOXICOLOGY

NONCLINICAL TOXICOLOGY SECTION

14 CLINICAL STUDIES

CLINICAL STUDIES SECTION

16 HOW SUPPLIED/STORAGE AND HANDLING

HOW SUPPLIED SECTION

IBRANCE is supplied in the following strengths and package configurations: IBRANCE Tablets Package Configuration Tablet Strength (mg) NDC Tablet Description Monthly box containing 3 weekly blister packs of 7 tablets each (21 tablets total) 125 NDC 0069-0688-03 Oval, light purple, film-coated tablets debossed with "Pfizer" on one side and "PBC 125" on the other side. Monthly box containing 3 weekly blister packs of 7 tablets each (21 tablets total) 100 NDC 0069-0486-03 Oval, green, film-coated tablets debossed with "Pfizer" on one side and "PBC 100" on the other side. Monthly box containing 3 weekly blister packs of 7 tablets each (21 tablets total) 75 NDC 0069-0284-03 Round, light purple, film-coated tablets debossed with "Pfizer" on one side and "PBC 75" on the other side.

17 PATIENT COUNSELING INFORMATION

INFORMATION FOR PATIENTS SECTION

Advise the patient to read the FDA-approved patient labeling (Patient Information).

SPL UNCLASSIFIED SECTION

SPL UNCLASSIFIED SECTION

This product's labeling may have been updated. For full prescribing information, please visit www.pfizer.com . For medical information about IBRANCE, please visit www.pfizermedinfo.com or call 1-800-438-1985. LAB-1371-8.0

SPL PATIENT PACKAGE INSERT SECTION

SPL PATIENT PACKAGE INSERT SECTION

This Patient Information has been approved by the U.S. Food and Drug Administration. Revised: June 2026 PATIENT INFORMATION IBRANCE ® (EYE-brans) (palbociclib) tablets What is the most important information I should know about IBRANCE? IBRANCE may cause serious side effects, including: • Low white blood cell counts (neutropenia). Low white blood cell counts are very common during treatment with IBRANCE and may cause serious infections that can lead to death. Your healthcare provider should check your white blood cell counts before and during treatment. If you develop low white blood cell counts during treatment with IBRANCE, your healthcare provider may stop your treatment, decrease your dose, or may tell you to wait to begin your treatment cycle. Tell your healthcare provider right away if you have signs and symptoms of low white blood cell counts or infections such as fever and chills. • Lung problems (pneumonitis). IBRANCE may cause severe or life-threatening inflammation of the lungs during treatment that can lead to death. Tell your healthcare provider right away if you have any new or worsening symptoms, including: o chest pain o cough with or without mucus o trouble breathing or shortness of breath Your healthcare provider may interrupt or stop treatment with IBRANCE completely if your symptoms are severe. See " What are the possible side effects of IBRANCE? " for more information about side effects. What is IBRANCE? IBRANCE is a prescription medicine used for: Human Epidermal Growth Factor Receptor 2 (HER2) – Negative Metastatic Breast Cancer • In adults to treat hormone receptor (HR)-positive, HER2-negative breast cancer that has spread to other parts of the body (metastatic) in combination with: o an aromatase inhibitor as the first hormonal-based therapy, or o fulvestrant in people with disease progression following hormonal therapy. • In adults with HR-positive, HER2-negative breast cancer, with an abnormal phosphatidylinositol-3-kinase catalytic subunit alpha (PIK3CA) gene, that has spread to nearby tissue or lymph nodes (locally advanced), or to other parts of the body (metastatic) in combination with: o inavolisib and fulvestrant in people whose cancer has come back during or after adjuvant hormonal therapy. HER2-Positive Metastatic Breast Cancer • As maintenance treatment in adults with HR-positive, HER2-positive breast cancer that has spread to nearby tissue or lymph nodes (locally advanced), or to other parts of the body (metastatic) in combination with: o trastuzumab, with or without pertuzumab, and hormonal therapy. It is not known if IBRANCE is safe and effective in children. What should I tell my healthcare provider before taking IBRANCE? Before taking IBRANCE, tell your healthcare provider about all of your medical conditions, including if you: • have fever, chills, or any other signs or symptoms of infection. • have liver or kidney problems. • have any other medical conditions. • are pregnant, or plan to become pregnant. IBRANCE can harm your unborn baby. o Females who are able to become pregnant should use effective birth control during treatment and for at least 3 weeks after the last dose of IBRANCE. Your healthcare provider may ask you to take a pregnancy test before you start treatment with IBRANCE. o Males with female partners who can become pregnant should use effective birth control during treatment with IBRANCE for at least 3 months after the last dose of IBRANCE. o Talk to your healthcare provider about birth control methods that may be right for you during this time. o If you become pregnant or think you are pregnant, tell your healthcare provider right away. • are breastfeeding or plan to breastfeed. It is not known if IBRANCE passes into your breast milk. Do not breastfeed during treatment with IBRANCE and for 3 weeks after the last dose. Tell your healthcare provider about all of the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. IBRANCE and other medicines may affect each other causing side effects. Know the medicines you take. Keep a list of them to show your healthcare provider or pharmacist when you get a new medicine. How should I take IBRANCE? • Take IBRANCE exactly as your healthcare provider tells you. • IBRANCE tablets may be taken with or without food. • IBRANCE should be taken at about the same time each day. • Swallow IBRANCE tablets whole. Do not chew, crush or split IBRANCE tablets before swallowing them. • Do not take any IBRANCE tablets that are broken, cracked, or that look damaged. • Avoid grapefruit and grapefruit products during treatment with IBRANCE. Grapefruit may increase the amount of IBRANCE in your blood. • Do not change your dose or stop taking IBRANCE unless your healthcare provider tells you. • If you miss a dose of IBRANCE or vomit after taking a dose of IBRANCE, do not take another dose on that day. Take your next dose at your regular time. • When IBRANCE is used in combination with inavolisib and fulvestrant, trastuzumab, pertuzumab, or an aromatase inhibitor, also read the Patient Information for the prescribed products. What are the possible side effects of IBRANCE? IBRANCE may cause serious side effects. See " What is the most important information I should know about IBRANCE? " The most common side effects of IBRANCE when used with either letrozole or fulvestrant include: • Low red blood cell counts and low platelet counts. Tell your healthcare provider right away if you develop any of these symptoms during treatment: o dizziness o shortness of breath o weakness o bleeding or bruising more easily o nosebleeds • infections (see " What is the most important information I should know about IBRANCE? ") • tiredness • nausea • sore mouth • increased liver enzyme blood tests • diarrhea • hair thinning or hair loss • increased creatinine blood levels The most common side effects of IBRANCE when used in combination with inavolisib plus fulvestrant include: • high blood sugar levels leading to excessive thirst and urination • sore mouth • diarrhea • decreased white blood cell counts, red blood cell counts, and platelet counts • decreased blood levels of calcium, potassium, sodium, and magnesium • increased creatine blood levels • tiredness • increased liver enzyme blood tests • nausea • rash • loss of appetite • COVID-19 infection • headache The most common side effects of IBRANCE when used in combination with trastuzumab, with or without pertuzumab, and hormonal therapy include: • decreased white blood cell counts, red blood cell counts, and platelet counts • increased creatinine blood levels • diarrhea • infections • sore mouth • increased liver enzyme blood tests • decreased blood levels of calcium and potassium • tiredness • nausea • weakness • headache • rash • itching • muscle spasms IBRANCE may cause fertility problems in males. This may affect your ability to father a child. Talk to your healthcare provider about family planning options before starting IBRANCE if this is a concern for you. Tell your healthcare provider if you have any side effect that bothers you or that does not go away. These are not all of the possible side effects of IBRANCE. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. How should I store IBRANCE? • Store IBRANCE at 68 °F to 77 °F (20 °C to 25 °C) in the original blister pack. Keep IBRANCE and all medicines out of the reach of children. General information about the safe and effective use of IBRANCE Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use IBRANCE for a condition for which it was not prescribed. Do not give IBRANCE to other people, even if they have the same symptoms you have. It may harm them. You can ask your pharmacist or healthcare provider for more information about IBRANCE that is written for health professionals. What are the ingredients in IBRANC...

PRINCIPAL DISPLAY PANEL - 75 mg Tablet Dose Pack

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

PROFESSIONAL SAMPLE - NOT FOR SALE Pfizer NDC 63539-284-07 IBRANCE ® (palbociclib) tablets 75 mg per tablet This weekly pack contains: 7 tablets Rx only

PRINCIPAL DISPLAY PANEL - 75 mg Tablet Dose Pack Box

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

PROFESSIONAL SAMPLE - NOT FOR SALE Pfizer NDC 63539-284-03 IBRANCE ® (palbociclib) tablets 75 mg 21 tablets Monthly Box Contains: 3 individual weekly packs. Each pack contains 7 IBRANCE tablets (75 mg per tablet). Rx only Safety Label

PRINCIPAL DISPLAY PANEL - 100 mg Tablet Dose Pack

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

PROFESSIONAL SAMPLE - NOT FOR SALE Pfizer NDC 63539-486-07 IBRANCE ® (palbociclib) tablets 100 mg per tablet This weekly pack contains: 7 tablets Rx only

PRINCIPAL DISPLAY PANEL - 100 mg Tablet Dose Pack Box

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

PROFESSIONAL SAMPLE - NOT FOR SALE Pfizer NDC 63539-486-03 IBRANCE ® (palbociclib) tablets 100 mg 21 tablets Monthly Box Contains: 3 individual weekly packs. Each pack contains 7 IBRANCE tablets (100 mg per tablet). Rx only Safety Label

PRINCIPAL DISPLAY PANEL - 125 mg Tablet Dose Pack

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

PROFESSIONAL SAMPLE - NOT FOR SALE Pfizer NDC 63539-688-07 IBRANCE ® (palbociclib) tablets 125 mg per tablet This weekly pack contains: 7 tablets Rx only

PRINCIPAL DISPLAY PANEL - 125 mg Tablet Dose Pack Box

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

PROFESSIONAL SAMPLE - NOT FOR SALE Pfizer NDC 63539-688-03 IBRANCE ® (palbociclib) tablets 125 mg 21 tablets Monthly Box Contains: 3 individual weekly packs. Each pack contains 7 IBRANCE tablets (125 mg per tablet). Rx only Safety Label

PRINCIPAL DISPLAY PANEL - Topper Card

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

Your Monthly Box Includes 3 weekly packs of IBRANCE ® (palbociclib) medication. Fill in the dates below to help track your treatment cycle. Treatment Cycle Week 1 Week 2 Week 3 IBRANCE Week 4 No IBRANCE My Treatment Cycle Tracker I start my Week 1 treatment cycle on: ________ / ______ MONTH DAY After Week 4, I will start my next treatment cycle on: ________ / ______ MONTH DAY PAA119239