Medical Oncologist
Medicines
Ribociclib (Kisqali) for breast cancer: the complete patient guide
Ribociclib is a targeted tablet taken with hormone therapy for hormone receptor positive, HER2-negative breast cancer, in early disease with a higher chance of returning and in advanced disease. This page explains, in general terms, how it works, how it is taken, the side effects and checks involved, and what daily life on treatment is usually like.
NG
Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
On this page
- What is ribociclib and what should you know before starting?
- Four things to understand about ribociclib
- Ribociclib in early and advanced breast cancer
- The vocabulary, in plain language
- The limits of ribociclib
- What happens before the first dose
- Day-to-day life on ribociclib
- Myths about ribociclib
- Common questions about ribociclib
The short answer
What is ribociclib and what should you know before starting?
Ribociclib, sold under the brand name Kisqali, is a targeted tablet for breast cancer that is hormone receptor positive and HER2-negative. It belongs to a group called CDK4/6 inhibitors, which block proteins that tell cancer cells to divide. It is always taken with hormone therapy, usually an aromatase inhibitor such as letrozole or anastrozole, or fulvestrant. Women who have not been through menopause, and men, also have injections to lower their own hormone levels. Ribociclib is used for advanced breast cancer, where trials showed it delayed cancer growth and helped people live longer on average, and for early breast cancer with a higher chance of coming back, where it lowered the risk of recurrence. It is usually taken once a day for three weeks followed by one week off. In early breast cancer it is given for three years at a lower dose. In advanced breast cancer it continues as long as it works and side effects are manageable. The most common side effect is a drop in white blood cells, which is usually found on blood tests and managed with pauses or dose changes. Other effects include tiredness, nausea, diarrhoea and hair thinning. Liver tests and ECGs are checked regularly, because ribociclib can affect the liver and lengthen the QT interval of the heart rhythm. It interacts with several medicines, grapefruit and pomegranate, so check before starting anything new.
Targeted and taken by mouth
A once-daily tablet that works alongside hormone therapy.
Needs regular checks
Blood counts, liver tests and ECGs are most frequent in the first months.
Side effects are usually manageable
Pauses and lower doses let most people continue treatment.
This page gives general information only. Your oncologist will explain whether ribociclib is right for you.The essentials
Four things to understand about ribociclib
These basics answer the questions most people have at the start.
How it works
It blocks CDK4 and CDK6, a switch that oestrogen uses to make cancer cells divide. Hormone therapy lowers the oestrogen signal at the same time.
Who it is for
People with hormone receptor positive, HER2-negative breast cancer that is advanced, or early but with a higher chance of returning.
How it is taken
Once a day for three weeks, then a week off. Tablets are swallowed whole, with or without food.
Hormone therapy continues through the week off.What to watch for
Most side effects are found on tests, but some need prompt attention.
Contact your team quickly for
- Fever or feeling shivery and unwell
- Fainting, palpitations or a racing heart
- Yellow skin or eyes, or new breathlessness
At a glance
Ribociclib in early and advanced breast cancer
Question
What generally applies
Aim of treatment
Early: lower the chance of return. Advanced: control the cancer for longer
Length of treatment
Early: three years. Advanced: as long as it works and is tolerated
Dose
Lower in early breast cancer, higher in advanced breast cancer
Partner medicine
An aromatase inhibitor, or fulvestrant in advanced disease
Main checks
Blood counts, liver tests and ECGs in both settings
Words you will hear
The vocabulary, in plain language
- CDK4/6 inhibitor
- A targeted medicine that blocks proteins cancer cells use to divide.
- Aromatase inhibitor
- A hormone tablet that lowers oestrogen after menopause, such as letrozole or anastrozole.
- Ovarian suppression
- Injections, such as goserelin, that switch off the ovaries before menopause.
- Neutrophils
- White cells that fight infection, often lowered by ribociclib.
- QT interval
- A part of the heart rhythm on an ECG that ribociclib can lengthen.
- Recurrence
- When breast cancer comes back after earlier treatment.
Talk to our team
Have a question about your situation?
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Being straight with you
The limits of ribociclib
Knowing the limits helps you make an informed choice and set realistic expectations.
It does not work for everyone
Some cancers do not respond, or stop responding after a time, and a change of treatment is then needed.
Treatment asks a lot
Daily tablets, frequent early tests, possible dose changes and ongoing hormone therapy take time and energy.
Not suitable for some people
Heart rhythm problems, some liver conditions, pregnancy or certain other medicines may mean another option is better.
What this page cannot tell you
It cannot tell you whether ribociclib is right for you, or how much it might help. Your oncologist can explain that for your situation.
Before you start
What happens before the first dose
A few checks and conversations help make treatment safe from day one.
Baseline tests
You will usually have a full blood count, liver tests, blood salts and an ECG. A pregnancy test is done if pregnancy is possible.
A medicines review
Bring a list of every medicine, supplement and herbal product you take, so interactions can be checked.
Planning ahead
Ask for your testing schedule, who to contact with a fever or other urgent symptoms, and how prescriptions will be arranged.
Contraception
If you could become pregnant, discuss non-hormonal contraception, needed during treatment and for at least three weeks after the last dose.
Living with treatment
Day-to-day life on ribociclib
Many people carry on working, caring for family and enjoying their usual activities while taking ribociclib.
Build a routine
Take tablets at the same time each day, and mark the week off on a calendar.
Protect against infection
Wash hands often, eat freshly cooked food and report a fever straight away.
Stay active
Gentle regular activity can ease tiredness, support bone health and lift mood.
Ask for support
Feeling anxious or low is common. Counselling, support groups and talking with your team can help.
Commonly believed
Myths about ribociclib
Ribociclib is chemotherapy in tablet form.
It is a targeted medicine with a different way of working and a different side effect pattern.
A dose reduction means it will stop working.
Trial analyses suggest people who needed a lower dose still seemed to benefit.
Herbal remedies are a safe way to support treatment.
Some herbs, such as St John's wort, change ribociclib levels, so check first.
It can be combined with any hormone tablet.
It is not usually given with tamoxifen, because both can affect the heart rhythm.
Questions we are asked
Common questions about ribociclib
Is ribociclib the same as Kisqali?
Yes. Ribociclib is the name of the medicine, and Kisqali is the brand name used by its original maker. You may see either name on prescriptions, leaflets and packs. Always check with your pharmacist if a pack looks different from usual, so you know you have the right medicine and strength.
Will I lose my hair?
Hair thinning is common on ribociclib, but complete hair loss is uncommon, unlike with many chemotherapy treatments. Hair often becomes finer or sheds more than usual and generally improves after treatment ends. Gentle hair care helps.
Can I work while taking ribociclib?
Many people keep working. You may need time off for frequent tests in the first months, and tiredness can affect your energy. Talking with your employer about flexible hours during the early cycles can help. Report fevers promptly, especially if you work with the public.
What if my cancer grows while on ribociclib?
In advanced breast cancer, growth on scans usually means a change of treatment. Options may include a different hormone therapy, another targeted medicine chosen by testing the cancer, or chemotherapy. Your oncologist will explain the choices that suit you.
Can I get the flu vaccine?
Inactivated vaccines, such as the injected flu vaccine, are generally recommended for people on cancer treatment. Live vaccines are usually avoided. Ask your team about the best timing, which is often when your blood counts are not at their lowest.
Does ribociclib affect fertility?
Ribociclib may affect fertility, and the ovarian suppression often given with it stops periods during treatment. Pregnancy must be avoided during treatment. If you hope to have children in future, ask about fertility preservation before starting.
What happens if I need surgery or dental work?
Tell the surgeon or dentist that you take ribociclib. Your team may pause it around the procedure and check your blood count first, because a low white cell count can raise the risk of infection and affect healing.
Is there a generic version of ribociclib?
Availability of other approved versions differs between countries and changes over time. Your oncologist or pharmacist can tell you which versions are approved in India and whether switching between them is appropriate for you.
Meet the Specialists
17+ senior cancer specialists. One panel for your case.
Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
Surgical Oncologist
Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
Surgical Oncologist
Radiation Oncologist
Radiation Oncologist
Radiation Oncologist
Hematologist
Surgical Oncologist
Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
Surgical Oncologist
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Where to find us
Our centres in and around Hyderabad
Addressed by landmark, because that is how this city navigates. Each centre also names the areas it serves, so you can place it without a map. Consultation and day-care Chemotherapy run at every one of them.
Warangal
Vizag
Talk to our team
Speak to a breast cancer specialist
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Sources
- Cancer Research UK — Ribociclib (Kisqali)
- National Cancer Institute — Ribociclib
- Macmillan Cancer Support — Ribociclib
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.