• Keep this leaflet. You may need to read it again.
• If you have any further questions, ask your doctor, pharmacist or nurse.
• This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
• If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. See section 4.
• This leaflet has been written as though the person taking the medicine is reading it. If you are giving this medicine to your child, please replace “you” with “your child” throughout.

1. What VITRAKVI is and what it is used for
2. What you need to know before you take VITRAKVI
3. How to take VITRAKVI
4. Possible side effects
5. How to store VITRAKVI
6. Contents of the pack and other information

VITRAKVI contains the active substance larotrectinib.

It is used in adults, adolescents and children to treat solid tumours (cancer) in various parts of the body that are caused by a change in the NTRK gene (neurotrophic tyrosine receptor kinase).

VITRAKVI is only used when

• these cancers are advanced or have spread to other parts of the body or if a surgery to remove the cancer is likely to cause severe complications and
• there are no satisfactory treatment options.

Before you are given VITRAKVI, your doctor will do a test to check if you have the change in the NTRK gene.

In patients whose cancer is due to an altered NTRK gene, the change in the gene causes the body to make an abnormal protein called TRK fusion protein, which can lead to uncontrolled cell growth and cancer. VITRAKVI blocks the action of TRK fusion proteins and so may slow or stop the growth of the cancer. It may also help to shrink the cancer.

If you have any questions on how VITRAKVI works or why it has been prescribed for you, ask your doctor, pharmacist or nurse.

• you are allergic to larotrectinib or any of the other ingredients of this medicine (listed in section 6).

VITRAKVI can increase the amount of the liver enzymes ALT and AST and bilirubin in your blood. Your doctor will do blood tests before and during treatment to check the level of ALT, AST and bilirubin and check how well your liver is working.

Tell your doctor, pharmacist or nurse if you are taking, have recently taken or might take any other medicines. This is because some medicines may affect the way VITRAKVI works or VITRAKVI may affect how other medicines work.

In particular, tell your doctor, pharmacist or nurse if you are taking any of the following medicines:

• medicines used to treat fungal or bacterial infections called itraconazole, voriconazole, clarithromycin, telithromycin, troleandomycin
• a medicine used to treat Cushing’s syndrome called ketoconazole
• medicines used to treat HIV infection called atazanavir, indinavir, nelfinavir, ritonavir, saquinavir, rifabutin, efavirenz
• a medicine used to treat depression called nefazodone
• medicines used to treat epilepsy called phenytoin, carbamazepine, phenobarbital
• a herbal medicine used to treat depression called St. John’s wort
• a medicine used to treat tuberculosis called rifampicin
• a medicine used for strong pain relief called alfentanil
• medicines used to prevent organ rejection after an organ transplant called ciclosporin, sirolimus, tacrolimus
• a medicine used to treat an abnormal heart rhythm called quinidine
• medicines used to treat migraines called dihydroergotamine, ergotamine
• a medicine used to treat long-term pain called fentanyl
• a medicine used to control involuntary movements or sounds called pimozide
• a medicine to help you stop smoking called bupropion
• medicines to reduce blood sugar levels called repaglinide, tolbutamide
• a medicine that prevents blood clots called warfarin
• a medicine used to reduce the amount of acid produced in the stomach called omeprazole
• a medicine used to help control high blood pressure called valsartan
• a group of medicines used to help lower cholesterol called statins
• hormonal medicines used for contraception, see section “contraception – for men and women” below.

If any of the above apply to you (or you are not sure), talk to your doctor, pharmacist or nurse.

Do not eat grapefruit or drink grapefruit juice while taking VITRAKVI. This is because it may increase the amount of VITRAKVI in your body.

Pregnancy

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.

You should not use VITRAKVI during pregnancy since the effect of VITRAKVI on the unborn is not known.

Breast-feeding

Do not breast-feed while taking this medicine and for 3 days after the last dose. This is because it is not known if VITRAKVI passes into breast milk.

You should avoid getting pregnant while taking this medicine.

If you are able to become pregnant, your doctor should do a pregnancy test before you start treatment.

You must use effective methods of contraception while taking VITRAKVI and for at least 1 month after the last dose, if

• you are able to become pregnant. If you use hormonal contraceptives, you should also use a barrier method, such as a condom.
• you have sex with a woman able to become pregnant.

Ask your doctor about the best method of contraception for you.

VITRAKVI may make you feel dizzy or tired. If this happens, do not drive, cycle or use any tools or machines.

Adults (from 18 years)

• The recommended dose of VITRAKVI is 100 mg (1 capsule of 100 mg or 4 capsules of 25 mg), two times a day.
• Your doctor will review your dose and change it as needed.

Children and adolescents

• Your child’s doctor will work out the right dose for your child based on their height and weight.
• The maximum recommended dose is 100 mg (1 capsule of 100 mg or 4 capsules of 25 mg), two times a day.
• Your child’s doctor will review the dose and change it as needed.

An oral solution of VITRAKVI is available for patients who cannot swallow the capsules.

• VITRAKVI can be taken with or without food.
• Do not eat grapefruit or drink grapefruit juice while taking this medicine.
• Swallow the VITRAKVI capsules whole with a glass of water. Do not open, chew or crush the capsule as it has a very bitter taste.

Talk to your doctor, pharmacist or nurse or go to a hospital straight away. Take the medicine pack and this leaflet with you.

Do not take a double dose to make up for a forgotten dose or if you vomit after taking this medicine. Take your next dose at the usual time.

Do not stop taking this medicine without talking to your doctor first. It is important to take VITRAKVI for as long as your doctor tells you.

If you are not able to take the medicine as your doctor prescribed talk to your doctor straight away.

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 (see details below). By reporting side effects you can help provide more information on the safety of this medicine.

or search for MHRA Yellow Card in the Google Play or Apple App Store.

The active substance is larotrectinib.

Each VITRAKVI 25 mg capsule contains 25 mg of larotrectinib (as sulfate).

Each VITRAKVI 100 mg capsule contains 100 mg of larotrectinib (as sulfate).

The other ingredients are:

Capsule shell:

• Gelatin
• Titanium dioxide (E 171)

Printing ink:

• Shellac, bleached dewaxed
• Indigo carmine aluminium lake (E 132)
• Titanium dioxide (E 171)
• Propylene glycol (E 1520)
• Dimeticone 1000

• VITRAKVI 25 mg is supplied as white opaque hard gelatine capsule, (18 mm long x 6 mm wide), with blue printing of BAYER-cross and “25 mg” on the body of the capsule
• VITRAKVI 100 mg is supplied as white opaque hard gelatine capsule, (22 mm long x 7 mm wide), with blue printing of BAYER-cross and “100 mg” on the body of the capsule

Each carton contains 1 child-resistant plastic bottle containing 56 hard gelatine capsules.