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Nat-Trabectedin: Uses, Side Effects and Dosage

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Patient Medication Information: uses, side effects, how to take - Nat-Trabectedin

ABOUT THIS MEDICATION

What the medication is used for:

NAT-TRABECTEDIN (trabectedin) is used for the treatment of patients with metastatic liposarcoma or leiomyosarcoma

(forms of soft tissue sarcoma) when previous medicines

have been unsuccessful. NAT-TRABECTEDIN has been shown to slow growth of liposarcoma or leiomyosarcoma but it is not

known if NAT-TRABECTEDIN prolongs overall survival or

improves quality of life of patients with these sarcomas.

NAT-TRABECTEDIN in combination with PLD (pegylated liposomal doxorubicin hydrochloride) (another anti-cancer medicine) is used for the treatment of patients with

platinum-sensitive ovarian cancer after one previous therapy. NAT-TRABECTEDIN has been shown to slow growth of

ovarian cancer but it is not known if NAT-TRABECTEDIN prolongs overall survival or improves quality of life of patients with ovarian cancer.

What it does:

NAT-TRABECTEDIN is an anticancer medicine that works by preventing the tumour cells from multiplying.

When it should not be used:

  • If you are allergic (hypersensitive) to trabectedin or to

    any ingredient in the formulation or component of the

    container of NAT-TRABECTEDIN.

  • If you are breast-feeding.
  • If you have an active serious or uncontrolled infection.

What the medicinal ingredient is:

trabectedin

What the nonmedicinal ingredients are:

phosphoric acid, potassium dihydrogen phosphate,

potassium hydroxide, sucrose.

What dosage forms it comes in:

NAT-TRABECTEDIN is a powder for injection. The powder is reconstituted in sterile water and further diluted in a sterile

salt solution or sugar solution before it is infused.

NAT-TRABECTEDIN is available in a vial that contains 1 mg

trabectedin.

WARNINGS AND PRECAUTIONS

Serious Warnings and Precautions

NAT-TRABECTEDIN should be prescribed and managed only by a doctor experienced in anticancer drugs.

In order to avoid irritation at the site of injection,

NAT-TRABECTEDIN must be given to you through a central venous line.

NAT-TRABECTEDIN or its combination with PLD must not be used if you have increased blood bilirubin levels.

Serious side effects which have been reported with the use of NAT-TRABECTEDIN include:

  • Increase in liver enzymes which can be monitored by lab tests
  • Severe muscle pain or weakness (rhabdomyolysis)
  • Decrease in white blood cells which may lead to

    infection

  • Blood clots in the lung
  • Severe reaction at site of injection

BEFORE you use NAT-TRABECTEDIN talk to your doctor or pharmacist if:

  • you have a history of myelosuppression (a decrease in

    the production of blood cells);

  • you have any problems with your kidneys;
  • you have any problems with your liver;
  • you are pregnant, planning to become pregnant or

    breast-feeding.

NAT-TRABECTEDIN is not recommended in children or adolescents under 18 years of age.

Contraception and Pregnancy:

Both men and women must use effective contraception while receiving NAT-TRABECTEDIN, and for 3 months after treatment for women and 5 months after treatment for men.

You must make sure that you do not become pregnant while receiving NAT-TRABECTEDIN, but if you do, inform your doctor immediately. NAT-TRABECTEDIN may harm your fetus. You should not take NAT-TRABECTEDIN if you are pregnant.

Genetic counselling is recommended for patients wishing to have children after therapy. Male patients should seek advice on sperm conservation prior to treatment because of the risk of irreversible infertility due to therapy with

NAT-TRABECTEDIN.

Breast-Feeding:

NAT-TRABECTEDIN must not be given to patients who are breastfeeding. Therefore you must stop breast-feeding before you start your treatment and you must not begin breast-feeding again until your doctor has confirmed that it is safe to do so.

Driving and using machines:

Tiredness and weakness have been reported in patients receiving NAT-TRABECTEDIN. Do not drive or operate any dangerous tools or machines if you experience such side

effects. Even if you have not felt these effects, you must

still be cautious.

INTERACTIONS WITH THIS MEDICATION

Inform your doctor, medical health personnel or pharmacist

about all medicines you are taking, whether prescribed for

you or bought without a prescription.

The following medications may lower the effect of

NAT-TRABECTEDIN:

  • Rifampin for bacterial infection
  • Phenobarbital for epilepsy
  • St. John’s Wort, an herbal medicine for depression

The following medicines may increase the effect of

NAT-TRABECTEDIN:

  • Ketoconazole for fungal infections
  • Ritonavir for HIV infection
  • Clarithomycin for bacterial infections
  • Cyclosporine an immune-suppressive medicine
  • Verapamil for high blood pressure or heart

    condition

The following medicines may increase risks of muscle or

liver damage (rhabdomyolysis):

  • Statins for lowering cholesterol levels

Alcohol must be avoided during treatment with

NAT-TRABECTEDIN.

PROPER USE OF THIS MEDICATION

Usual dose:

The dose will be calculated from your height and weight.

For the treatment of metastatic liposarcoma or

leiomyosarcoma, the usual dose is 1.5 mg/m2 body surface

area as a 24-hour intravenous infusion.

For the treatment of ovarian cancer, the usual starting dose

is 1.1 mg/m2 body surface area as a 3-hour intravenous

infusion after PLD 30 mg/m2 body surface areas, as a

90-minute intravenous infusion.

The infusion is given every 3 weeks, although occasionally

your doctor may recommend dose delays to ensure that you

receive the most appropriate dosage of NAT-TRABECTEDIN.

You must be premedicated with corticosteroids such as

dexamethasone 20 mg IV, 30 minutes before each

NAT-TRABECTEDIN infusion; not only to prevent vomiting, but also because it appears to protect the liver. Before NAT-TRABECTEDIN is given to you, it is reconstituted and diluted and then put into a drip bag for intravenous use.

In order to avoid irritation at the site of injection, NAT-TRABECTEDIN be given to you through a central venous line.

During the treatment period, your doctor will carefully

monitor you and decide the most appropriate dosage of NAT-TRABECTEDIN to give you. The length of your whole treatment period will depend on your progress and how well you feel. Your doctor will tell you how long your treatment lasts.

Overdose:

For management of a suspected drug overdose, contact your regional poison control centre.

Missed dose:

If you think that you have missed a dose of NAT-TRABECTEDIN, tell your healthcare provider immediately.

SIDE EFFECTS AND WHAT TO DO ABOUT THEM

Like all medicines, NAT-TRABECTEDIN or its combination with PLD can cause side effects, although not everyone gets them.

Side effects caused by NAT-TRABECTEDIN treatment:

Very common (may affect more than 1 in 10 people) side effects are that you may:

  • feel tired
  • feel shortness of breath
  • bruise more easily
  • have nose bleeds
  • have a decrease in white blood cells or platelets which

    may lead to infection or unexpected bruising or bleeding

  • have blood infections (neutropenic infection and

    neutropenic sepsis). Your doctor will order regular blood tests to detect any abnormalities in the blood.

  • experience headache and a loss of strength
  • lose your appetite, feel sick (nausea) or vomit, and

    become constipated. If you still feel sick, vomit or are unable to drink fluids and therefore pass less urine, despite being given anti-sickness medication, you should immediately seek medical help.

  • have diarrhea, loss of water from the body,

    inflammation of the mouth (stomatitis), pain in the abdomen, weight loss, digestive discomfort and a change in your sense of taste

  • have the hand and foot syndrome. It may present as red

    skin of the palms, fingers, and soles of the feet that later may become swollen and violaceous. The lesions may either dry out and desquamate, or blister with ulceration

  • increase in blood bilirubin levels which may lead to

    yellow eyes or skin, dark urine

  • lose hair (alopecia)
  • low levels of potassium
  • sleep disorder (insomnia)
  • pain, redness or swelling of the skin at the site of

    injection

Your doctor may require blood tests in certain situations in order to avoid developing muscle damage to the muscles

(rhabdomyolysis). In very severe cases this could lead to kidney failure. If you experience severe muscle pain or

weakness, you should seek medical attention immediately.

Some other common (may affect up to 1 in 10 people) side

effects that you may have are:

  • a higher skin pigmentation and rash
  • coughing
  • dizziness, low blood pressure and flushing
  • fever. If you have a raised temperature you should seek

    medical attention immediately

  • mucosal inflammation as a swelling redness of the

    inside of the mouth leading to painful ulcers and mouth

    sores or as an inflammation of the gastrointestinal tract

  • a syncope also called fainting
  • a weakness in the ventricles, the heart's major pumping

    chambers (left ventricular dysfunction), sudden

    blockage in a lung artery (pulmonary embolism) and an

    abnormal build up of fluid in the lungs, which leads to

    swelling (pulmonary oedema)

  • pain in your back, muscles and joints
  • damage to your nerves which may result in tingling,

    numbness, and burning sensation in the extremities

  • general swelling or swelling of the limbs

In uncommon (may affect up to 1 in 100 people) cases you

may experience yellowing of your skin and eyeballs

(jaundice), pain in the upper right area of your abdomen,

nausea, vomiting, a general sense of not feeling well,

difficulty in concentrating, disorientation or confusion, and

sleepiness. These signs could mean that your liver is not

working properly. If you experience any of these symptoms

you should seek medical attention immediately.

If any of the side effects get serious, or if you notice any

side effects not listed in this leaflet, please tell your doctor.

SERIOUS SIDE EFFECTS, HOW OFTEN THEY

HAPPEN AND WHAT TO DO ABOUT THEM

Symptom / effectTalk with your doctor or pharmacistStop taking drug and call your doctor or pharmacist
Only if severeIn all cases
Very Common (may affect more than 1 in 10 people)
Decrease in white blood cells or platelets in blood which may lead to infection or unexpected bruising or bleeding√
Nausea, vomiting√
Fatigue√
Loss of appetite√
Increase in blood bilirubin levels which may lead to yellow eyes or skin, dark urine√
Reddening painful skin on hands and feet√
Increase in blood creatine phosphokinase which may lead to muscle pain, weakness, muscle spasms√
Mouth ulceration, mucosal inflammation√
Common (may affect up to 1 in 10 people)
Fever√
Heart muscle problems, including heart failure that may be present as new chest pain, shortness of breath, tiredness, swelling in your legs, ankles or feet, or heart palpitations√
Rare (may affect up to 1 in 1000 people)

Allergic reaction

(hypersensitivity) that may present as fever, difficulty breathing, redness or flushing of the skin or a rash, feeling sick (nausea)

or being sick (vomiting)

√
Unknown
Capillary leak syndrome, the symptoms of which may include sudden swelling (edema) of the arms, legs and other parts of the body, occurring with or without sudden drop in blood pressure√

This is not a complete list of side effects. For any unexpected effects while taking NAT-TRABECTEDIN, contact your doctor or pharmacist.

HOW TO STORE IT

NAT-TRABECTEDIN should be stored in the refrigerator

(2ºC – 8ºC).

The reconstituted solution should not be stored longer than

24 hours at 2ºC to 8ºC.

The total hold time between initial reconstitution and end of treatment should not be longer than 30 hours

REPORTING SUSPECTED SIDE EFFECTS

You can report any suspected side effects associated with the use of health products to Health Canada by:

  • Visiting the Web page on Adverse Reaction Reporting (https://www.canada.ca/en/health-canada/services/drugs-health-products/medeffect-canada/adverse-reaction-reporting.html) for information on how to report online, by mail or by fax; or
  • Calling toll-free 1-866-234-2345

NOTE: Contact your health professional if you need information about how to manage your side effects. The Canada Vigilance Program does not provide medical advice.

MORE INFORMATION

If you want more information about NAT-TRABECTEDIN:

  • Talk to your healthcare professional
  • Find the full product monograph that is prepared for healthcare professionals and includes this Consumer Information by visiting the Health Canada website (https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug-product-database.html); the manufacturer's website www.natcopharma.ca, or by calling 1-800-296-9329.

Natco Pharma (Canada) Inc. Mississauga, Ontario L5N 1P7

Last revised: OCT 28, 2025

About this document

Source: Health Canada – Drug Product Database (DPD) and product monographs · DIN (Drug Identification Number): 02523531

Revision date stated in the text: October 28, 2025

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for Nat-Trabectedin

Rx or OTC
Prescription (Rx)?
DIN 02523531
Schedule(s) PRESCRIPTION
Active ingredient(s) Trabectedin 1 MG
Dosage form(s) Powder For Solution
Route(s) of administration Intravenous
Drug class (WHO ATC)
  1. L Antineoplastic and immunomodulating agents
    1. L01 Antineoplastic agents
      1. L01C Plant alkaloids and other natural products, antineoplastic drugs
        1. L01CX Other plant alkaloids and natural products
          1. L01CX01 Trabectedin
Company NATCO PHARMA (CANADA) INC
Current status Approved
Current status date October 28, 2025

Source: Health Canada – Drug Product Database (DPD) and product monographs, data as of November 1, 2026. Data from the Health Canada Drug Product Database, as published there. Not a substitute for the advice of a doctor or pharmacist.