Palbociclib
About Palbociclib
Palbociclib is an oral prescription medicine used to treat hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) advanced or metastatic breast cancer. It works by blocking specific proteins that help cancer cells grow and divide, thereby slowing the progression of the disease. Palbociclib is commonly used in combination with hormone therapy to help improve treatment outcomes and prolong disease control.
For Palbociclib to work effectively, it must be taken exactly as prescribed and at the same time each day. Palbociclib capsules should be taken with food, while the tablet formulation may be taken with or without food. Maintaining a balanced diet, staying physically active as tolerated, getting adequate rest, and attending all scheduled medical appointments can help support your overall health during treatment.
Common side effects of Palbociclib include fatigue, nausea, mouth sores, hair thinning, and a decrease in white blood cells, which can increase the risk of infections. Contact your healthcare provider immediately if you develop a fever, chills, difficulty breathing, chest pain, unusual bleeding, or any signs of a serious infection. Your doctor will perform regular blood tests to monitor your blood cell counts throughout treatment.
Before starting Palbociclib, tell your doctor if you have liver disease, kidney disease, or any history of lung problems. Do not take Palbociclib if you are pregnant or allergic to Palbociclib or any of its ingredients. Because Palbociclib can harm an unborn baby, effective contraception should be used during treatment and for the period recommended by your doctor after stopping Palbociclib.
Palbociclib may interact with several medicines, including certain antibiotics, antifungals, anticonvulsants, and herbal products such as St. John's wort, which can affect how Palbociclib works. Grapefruit and grapefruit juice should also be avoided, as they may increase Palbociclib levels in the body. If you are breastfeeding, planning to become pregnant, or are an older adult, discuss the potential risks and benefits with your healthcare provider before starting treatment.
Uses of Palbociclib
Medicinal Benefits
Palbociclib helps treat certain types of advanced or metastatic breast cancer by slowing the growth and spread of cancer cells. When used in combination with hormone therapy, it helps control the disease and supports improved treatment outcomes.
Benefits may include:
- Helps slow the growth and spread of certain hormone receptor-positive (HR-positive), HER2-negative breast cancers.
- Supports long-term disease control and helps delay cancer progression.
- May increase the length of time patients live without their cancer worsening when used with hormone therapy.
- Helps maintain quality of life by supporting better management of cancer-related symptoms.
- Allows many patients to continue their daily activities during treatment.
- Supports overall treatment goals as part of a comprehensive cancer care plan under specialist supervision.
Directions for Use
- Palbociclib can be taken with or without food. However, avoid taking it with grapefruit or grapefruit juice.
- It is recommended to take Palbociclib once daily or as prescribed by your doctor.
- Swallow Palbociclib as a whole with a glass of water.
- Do not break, chew, or crush it.
Storage
Side Effects of Palbociclib
Common Side Effects (Usually mild):
- Feeling very tired or weak (fatigue)
- Nausea or mild stomach upset
- Temporary thinning or loss of hair
- Mild diarrhea or loss of appetite
Serious Side Effects (Call a doctor right away):
- Signs of an infection, such as a fever (over 100.4°F or 38°C), chills, sore throat, or cough
- Unusual bleeding, easy bruising, or extreme paleness
- Severe shortness of breath, chest pain, or rapid breathing
- Signs of liver damage, such as yellowing of your skin or eyes, dark urine, or severe right-side stomach pain
Medicines Containing this Salt
View AllDrug Warnings
- Check Your Medication: Before taking your dose, inspect each capsule or tablet. If they are broken, leaking, or look damaged, do not take them and contact your pharmacy.
- Monitor Your Temperature: Always keep a working digital thermometer at home. Since your body's ability to fight infections is reduced, checking your temperature immediately when you feel unwell is a critical safety step.
- Get Regular Blood Tests: You will need frequent blood tests before starting and during your treatment cycles to check your blood cell counts. Always keep these scheduled appointments.
- Inform All Healthcare Providers: Let every doctor, dentist, or specialist you visit know that you are taking Palbociclib, especially before any planned surgeries or dental procedures.
- Use Effective Birth Control: Both men and women taking this medication must use highly effective birth control during treatment and for several months after the final dose to prevent pregnancy.
Drug Interactions
- Antifungal Medicines (e.g., ketoconazole): These medicines are strong CYP3A inhibitors and may increase the amount of Palbociclib in the body, raising the risk of side effects.
- Macrolide Antibiotics (e.g., clarithromycin): These medicines are strong CYP3A inhibitors and may increase the amount of Palbociclib in the body, raising the risk of side effects.
- Antibiotic Medicines (e.g., rifampin): These medicines are strong CYP3A inducers and may reduce the effectiveness of Palbociclib by increasing its breakdown in the body.
- Antiepileptic Medicines (e.g., phenytoin): These medicines are strong CYP3A inducers and may reduce the effectiveness of Palbociclib by increasing its breakdown in the body.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
cautionIt is not recommended to use alcohol with Palbociclib. Please consult your doctor if you have any concerns.
Pregnancy
unsafePalbociclib is not recommended for use in pregnancy. Please consult your doctor if you have any concerns.
Breast Feeding
unsafePalbociclib is not recommended during breastfeeding. Please consult your doctor in case of any concerns.
Driving
cautionPalbociclib may cause tiredness and lethargy, which may affect your ability to drive. Do not drive if you experience any side effects after using Palbociclib.
Liver
cautionExercise caution before using Palbociclib in case of established liver disease. Please consult your doctor to address any concerns.
Kidney
cautionExercise caution before using Palbociclib in case of established kidney disease. Please consult your doctor to address any concerns.
Children
unsafePalbociclib is not recommended for use in children under 18 years of age. Please consult your doctor in case of any concerns.
Habit Forming
Diet & Lifestyle Advise
- Avoid Grapefruit Products: Do not eat grapefruit or drink grapefruit juice while taking Palbociclib, as it can significantly increase the levels of Palbociclib in your blood, raising your risk of severe side effects.
- Prioritize Infection Prevention: Because Palbociclib can lower your white blood cell count, wash your hands frequently, avoid close contact with people who are sick, and ensure all food is thoroughly washed and cooked.
- Stay Well-Hydrated: Drink plenty of fluids, especially water, throughout the day to help manage mild diarrhea and support kidney function.
- Eat Small, Frequent Meals: If you experience nausea or a loss of appetite, eating smaller portions of bland foods throughout the day can help you maintain your strength.
- Engage in Gentle Exercise: Light physical activity, such as a daily short walk, can help combatcancer-related fatigue without overexerting your body.
Special Advise
Discuss contraception with your doctor while taking Palbociclib.
People on treatment with Palbociclib should use additional contraception (barrier method such as condoms). Contraception should be continued 3 weeks post-treatment for women and 14 weeks post-treatment for men.
You may want to consider sperm storage before starting Palbociclib. Seek counsel on the same from a qualified healthcare individual and/or sperm bank.
Regular complete blood count monitoring is advised.
Patients Concern
Disease/Condition Glossary
Breast Cancer: Breast cancer is a type of cancer that develops in breast cells. Breast cancer may form in lobules (glands that produce milk), ducts of the breast (the pathway that brings milk from glands to the nipple), in the fatty tissue or the fibrous connective tissue within the breast. The tumour cells invade other healthy breast cells and can travel to lymph nodes which are a primary pathway for the cancer cells to move to other parts of the body. Symptoms of breast cancer include a lump in the breast or tissue thickening which feels different than the normal surrounding tissues, breast pain, redness, swelling, nipple discharge other than breast milk, bloody discharge, unexplained change in shape, size or appearance of the breast, peeling, flaking or scaling of the skin, and a lump or swelling under the arm.
FAQs
Palbociclib belongs to the group of anti-cancer drugs used to treat certain types of breast cancer.
Palbociclib works blocking proteins responsible for cell growth and division, thereby arresting the progression of cancer cells.
Do not stop taking Palbociclib on your own. You are advised to take Palbociclib for as long as your doctor has prescribed it for you depending on your medical condition. Do not be reluctant to speak with your doctor if you experience any difficulty while taking Palbociclib.
A fibroadenoma is a benign state. Palbociclib is indicated only in case of cancers. Please consult your doctor in case of any concerns.
Palbociclib may reduce fertility in men. Men who wish to father children in the future should discuss sperm preservation before starting treatment. The effects on female fertility are not fully established. Talk to your doctor if fertility preservation is important to you before beginning treatment.
Palbociclib may reduce white blood cell count, thereby weakening the immune system. This might increase your risk of infections. If you notice any signs or symptoms of infections, consult your doctor.
Palbociclib is a type of targeted cancer drug. It is a treatment for breast cancer that is oestrogen receptor-positive (ER+) and human epidermal growth factor receptor-negative (HER2 -).
Most side effects associated with Palbociclib are temporary and can be effectively managed. However, certain side effects may persist or have a lasting impact in some cases. Common reversible side effects include fatigue, nausea, and hair loss, which typically resolve once treatment is stopped. In rare instances, more serious and potentially irreversible side effects may occur, such as permanent hair loss, increased infection risk, or heart problems. Regular monitoring and open communication with your healthcare team are essential to mitigate these risks and address any concerns that may arise during treatment.
Whether you should take Palbociclib with food depends on the formulation you have been prescribed. Follow your doctor's instructions and the directions on your prescription label. If you are unsure, ask your pharmacist or healthcare provider before taking your dose.
In some cases, side effects can be serious. If you experience any of the following symptoms, call your doctor immediately or seek emergency medical treatment: fever, chills, or signs of infection; difficulty breathing or shortness of breath; cough with or without mucus; chest pain; dizziness; fast, irregular, or pounding heartbeat; weakness; unusual bleeding or bruising; nosebleeds; or redness, pain, swelling, or blisters on the palms of your hands or soles of your feet, as well as skin blistering, peeling, or redness.
No. Do not take Palbociclib if you are pregnant or breastfeeding because it can seriously harm an unborn baby. Women of childbearing potential should have a pregnancy test before starting treatment and use effective birth control during treatment and for at least 3 weeks after the last dose. Men with female partners should use effective birth control during treatment and for at least 3 months after the last dose. Tell your doctor if you are pregnant, planning a pregnancy, or planning to father a child.
Yes. Regular blood tests are required because Palbociclib can lower your white blood cell count, increasing your risk of infection. Your healthcare provider will monitor your blood counts closely, especially during the first six treatment cycles, and then at regular intervals (often every 3 months if counts remain stable) to determine whether your treatment needs to be adjusted or temporarily stopped.
It is highly recommended to avoid or severely limit alcohol while taking Palbociclib. Alcohol can worsen common side effects like fatigue, dizziness, and nausea, and it can also place extra strain on your liver. Talk to your doctor or pharmacist about what is safe for you.
If you develop a fever of 100.4°F (38°C) or higher, call your doctor or seek emergency medical care immediately. A fever can be a sign of a low white blood cell count and a serious, potentially life-threatening infection. Do not take fever-reducing medications without contacting your healthcare provider first.
Yes, hair thinning or mild hair loss is a recognized side effect of Palbociclib, although it does not typically cause complete baldness. This is usually temporary, and hair often grows back after the treatment is completed. Talk to your doctor if this is causing you distress.
You should consult your doctor before taking any over-the-counter pain relievers or anti-inflammatory drugs. Some pain relievers can interact with your treatment or mask symptoms of an infection, such as a fever. Talk to your doctor or pharmacist for a safe recommendation.
You will usually take Palbociclib in repeated treatment cycles (typically 21 days on treatment followed by 7 days off) for as long as it continues to control your cancer and the side effects remain manageable. Your doctor will monitor your response with regular blood tests and scans and adjust treatment as needed.
Author Details
