Taking ribociclib: timing, food and daily routine

Ribociclib, sold as Kisqali, is a tablet taken by mouth once a day. It is usually taken for three weeks in a row, followed by one week without it, making a four-week cycle that repeats. Your hormone treatment continues through the week off: an aromatase inhibitor such as letrozole or anastrozole is taken every day, while fulvestrant is given as injections on its own schedule. Women who have not been through menopause, and men, also usually have an injection to lower hormone levels. Take ribociclib at about the same time each day, ideally in the morning, with or without food. Swallow the tablets whole with water. Do not crush, chew or split them, and do not take any tablet that is broken or cracked. The number of tablets depends on the dose your doctor prescribes, which is lower in early breast cancer than in advanced breast cancer and may change if side effects need a dose reduction. If you miss a dose or vomit after taking it, do not take an extra dose that day. Just take the next dose at your usual time. Avoid grapefruit, pomegranate and their juices, and check with your team before starting any new medicine or herbal product. Keep tablets in their original pack, away from heat, damp and children. A simple routine, a pill box and phone reminders make daily dosing much easier over months or years.

Once a day, same time

Pick a time you can keep, often the morning, and link it to a daily habit.

Three weeks on, one week off

Mark your start and stop days clearly so the cycle is easy to follow.

Whole tablets only

Swallow them whole; do not crush, chew or split them.

The instructions are simple on paper. Real life is more complicated, and that is normal.

Tablets can become a burden

Taking tablets daily for years, with frequent tests, is tiring. Talk to your team if it starts to feel too much.

Plans may change often

Dose changes and pauses are common, so your routine may need updating. Always check the current plan after each review.

Different advice between teams

Small details, such as timing on test days, vary between hospitals. Your own team's advice comes first.

What this page cannot tell you

It cannot tell you your dose or schedule. Only your prescription and your oncology team can do that.

Small practical steps can take the effort out of remembering.

Use a calendar

Mark the first and last tablet day of each cycle, and your blood test and ECG dates.

Link it to a habit

Take tablets with morning tea or after brushing your teeth, so the routine sticks.

Check your supply

At the start of each cycle, count your tablets and arrange the next prescription in good time.

Travel sensibly

Carry tablets in hand luggage in their original packs, with a copy of your prescription.