Patient Leaflet Updated 09-Apr-2026 | Eli Lilly and Company Limited
Inluriyo 200 mg film-coated tablets
Inluriyo® 200 mg film-coated tablets
imlunestrant
▼This medicine is subject to additional monitoring. This will allow quick identification of new safety information. You can help by reporting any side effects you may get. See the end of section 4 for how to report side effects.
1. What Inluriyo is and what it is used for
2. What you need to know before you take Inluriyo
3. How to take use Inluriyo
4. Possible side effects
5. How to store Inluriyo
6. Contents of the pack and other information
Inluriyo is a cancer medicine that contains the active substance imlunestrant and belongs to a group of medicines called selective oestrogen receptor degraders.
Inluriyo is used to treat adults with a certain type of breast cancer that is locally advanced or has spread to other parts of the body (metastatic) and whose cancer has not responded to or progressed further following at least one line of hormonal treatment. It is used when the cancer cells have oestrogen receptors (ER-positive) and do not have many receptors called human epidermal growth factor receptor 2 (HER2-negative). Inluriyo can only be used in patients who have certain changes (mutations) in a gene called ESR1.
In fertile woman and women in transition to menopause, and in men, treatment with Inluriyo should be combined with a luteinising hormone-releasing hormone (LHRH) agonist.
Oestrogen receptors are proteins in cells that activate when the hormone oestrogen binds to them. By binding to these receptors, oestrogen can in some cases cause cancer cells to grow and multiply. Imlunestrant binds to oestrogen receptors in the cancer cells, which breaks them down and stops them from working. By blocking and destroying oestrogen receptors, imlunestrant can slow down the growth and spread of breast cancer and help to kill cancer cells.
Inluriyo should not be used in children and adolescents under 18 years of age as it is not intended to treat breast cancer in this age group.
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. This is because some medicines may affect the way Inluriyo works and Inluriyo may affect the way other medicines work. For example, either medicine may become less effective or you may be more likely to experience side effects.
In particular, tell your doctor or pharmacist before taking Inluriyo if you are taking the following:
Pregnancy
Inluriyo may harm an unborn baby. If you are pregnant, think you may be pregnant, or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.
If you are a man, or woman of childbearing age, you must use an effective method of contraception (birth control) during treatment with Inluriyo and for at least 1 week after stopping the treatment. Ask your doctor about suitable methods. If you are a woman who could become pregnant, your doctor will confirm that you are not pregnant before starting you on treatment with Inluriyo. This may include having a pregnancy test. Tell your doctor immediately if you become pregnant.
Breast-feeding
Do not breast-feed while taking Inluriyo. It is unknown whether Inluriyo passes into breast milk.
Fertility
Inluriyo may decrease fertility in men and women. Talk to your doctor or pharmacist for advice if you are planning to have a baby.
Inluriyo has no or negligible influence on your ability to drive and use machines. However, since fatigue and weakness have been reported in some patients taking Inluriyo, if you experience these side effects, you should be careful when driving or operating machinery.
This medicine contains less than 1 mmol sodium (23 mg) per dose, that is to say essentially ‘sodium-free’.
Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
The recommended dose of Inluriyo is 400 mg (two 200 mg film-coated tablets) taken once daily.
If you experience liver problems your doctor may lower your dose to 200 mg once daily.
If you get certain side effects while you are taking Inluriyo your doctor may lower your dose, pause your treatment until the side effects resolve, or stop treatment permanently.
Your doctor will tell you exactly how many tablets to take.
Take Inluriyo on an empty stomach; at least 2 hours before or 1 hour after food.
Inluriyo should be taken at about the same time every day. The tablets should be swallowed whole. Do not chew, crush, or split tablets before swallowing. This medicine could be harmful for people who are not taking Inluriyo.
If you have taken more Inluriyo than you should, contact a doctor or pharmacist immediately, or go to a hospital for advice. Take the tablets and this leaflet with you. Medical treatment may be necessary.
Do not stop taking Inluriyo unless your doctor or pharmacist tells you to. Continuous treatment is important and stopping treatment without advice may worsen your condition.
If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Tell your doctor, pharmacist or nurse if you notice any of the following:
Very common (may affect more than 1 in 10 people)
Common (may affect up to 1 in 10 people)
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via Yellow Card Scheme, website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton and blister after EXP. The expiry date refers to the last day of that month.
This medicine does not require any special storage conditions.
Do not use this medicine if you notice that the pack is damaged or shows signs of tampering.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
The active substance is imlunestrant. Each film-coated tablet contains imlunestrant tosylate equivalent to 200 mg imlunestrant.
The other ingredients are:
Inluriyo 200 mg is supplied as a white, capsule shaped film-coated tablet (tablet) of 14 x 7.5 mm, debossed with “LILLY” on one side and “1717” and an elongated 4-point starburst on the other side.
It is available in blister packs of 28 and 56 film-coated tablets.
Not all the pack sizes may be marketed.
For any information about this medicine, please contact the local representative of the Marketing Authorisation Holder:
This leaflet was last revised in February 2026.
Lilly House, Basing View, Basingstoke, Hampshire, RG21 4FA
https://www.lilly.com/uk/
https://www.lillymedical.co.uk/en-gb
