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Temozolomide Reliance 100 mg hard capsules – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
100 mg
Contains active substance:
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Patient leaflet - Temozolomide Reliance 100 mg hard capsules

1. What temozolomide capsules are and what it is used for

Temozolomide capsules contain a medicine called temozolomide. This medicine is an antitumour agent.

Temozolomide is used for the treatment of specific forms of brain tumours:

  • In adults with newly-diagnosed glioblastoma multiforme. Temozolomide is first

    used together with radiotherapy (concomitant phase of treatment) and after that alone (monotherapy phase of treatment).

  • In children 3 years and older and adult patients with malignant glioma, such as

    glioblastoma multiforme or ana plastic astrocytoma. Temozolomide is used in these tumours if they return or get worse after standard treatment.

2. What you need to know before you take temozolomide capsules

Do not take temozolomide capsules

  • If you are allergic to temozolomide or any of the other ingredients of this

    medicine (listed in section 6).

  • If you have had an allergic reaction to dacarbazine (an anticancer medicine

    sometimes called DTIC). Signs of allergic reaction include feeling itchy, breathlessness or wheezing, swelling of the face, lips, tongue or throat.

  • If certain kinds of blood cells are severely reduced (myelosuppression), such as

    your white blood cell count and platelet count. These blood cells are important for fighting infection and for proper blood clotting. Your doctor will check your blood to make sure you have enough of these cells before you begin treatment. Warnings and precautions

Talk to your doctor, pharmacist or nurse before taking temozolomide capsules,

  • as you should be observed closely for the development of a serious form of chest

    infection called Pneumocystis jirovecii pneumonia (PCP). If you are a newly-diagnosed patient (glioblastoma multiforme) you may be receiving temozolo-mide capsules for 42 days in combination with radiotherapy. In this case, your doctor will also prescribe medicine to help you prevent this type of pneumonia (PCP).

  • if you have ever had or might now have a hepatitis B infection. This is because
  • if you have low counts of red blood cells (anaemia), white blood cells and

    platelets, or blood clotting problems before starting the treatment, or if you develop them during treatment. Your doctor may decide to reduce the dose, interrupt, stop or change your treatment. You may also need other treatments. In some cases, it may be necessary to stop treatment with temozolomide capsules. Your blood will be tested frequently during treatment to monitor the side effects of temozolomide capsules on your blood cells.

  • as you may have a small risk of other changes in blood cells, including leukae-

    mia.

  • if you have nausea (feeling sick in your stomach) and/or vomiting which are

    very common side effects of temozolomide capsules (see section 4), your doctor may prescribe you a medicine (an anti-emetic) to help prevent vomiting. If you vomit frequently before or during treatment, ask your doctor about the best time to take temozolomide capsules until the vomiting is under control. If you vomit after taking your dose, do not take a second dose on the same day.

  • if you develop fever or symptoms of an infection, contact your doctor immedi-

    ately.

  • if you are older than 70 years of age, you might be more prone to infections,

    bruising or bleeding.

  • if you have liver or kidney problems, your dose of temozolomide may need to be

    adjusted.

Children and adolescents

Do not give this medicine to children under the age of 3 years because it has not been studied. There is limited information in patients over 3 years of age who have taken temozolomide.

Other medicines and temozolomide capsules

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

Pregnancy , breast-feeding and fertility

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine. This is because you must not be treated with temozolomide capsules during pregnancy unless clearly indicated by your doctor.

Effective contraceptive precautions must be taken by female patients who are able to become pregnant during treatment with temozolomide, and for at least 6 months following completion of treatment.

You should stop breast-feeding while receiving treatment with temozolomide capsules.

Male fertility

Temozolomide may cause permanent infertility. Male patients should use effective contraception and not father a child for at least 3 months after stopping treatment. It is recommended to seek advice on conservation of sperm prior to treatment. Driving and using machines

Temozolomide may make you feel tired or sleepy. In this case, do not drive or use any tools or machines or cycle until you see how this medicine affects you (see section 4).

Temozolomide contains

Lactose

Temozolomide contains lactose (a kind of sugar). If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicine.

Sodium

This medicine contains less than 1 mmol sodium (23 mg) per capsule, that is to say essentially ‘sodium-free’.

3. How to take temozolomide capsules

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.

Dosage and duration of treatment

Your doctor will work out your dose of temozolomide capsules. This is based on your size (height and weight) and if you have a recurrent tumour and have had chemotherapy treatment in the past.

You may be given other medicines (anti-emetics) to take before and/or after taking temozolomide capsules to prevent or control nausea and vomiting. Patients with newly-diagnosed glioblastoma multiforme:

If you are a newly-diagnosed patient, treatment will occur in two phases:

  • treatment together with radiotherapy (concomitant phase) first
  • followed by treatment with only temozolomide capsules (monotherapy phase). During the concomitant phase, your doctor will start temozolomide at a dose of 75 mg/m2 (usual dose). You will take this dose every day for 42 days (up to 49 days) in combination with radiotherapy. The temozolomide capsules dose may be delayed or stopped, depending on your blood counts and how you tolerate your medicine during the concomitant phase.

Once the radiotherapy is completed, you will interrupt treatment for 4 weeks. This will give your body a chance to recover.

Then, you will start the monotherapy phase.

During the monotherapy phase, the dose and way you take temozolomide will be different. Your doctor will work out your exact dose. There may be up to 6 treatment periods (cycles). Each one lasts 28 days. You will take your new dose of temozolomide alone once daily for the first 5 days (“dosing days”) of each cycle. The first dose will be 150 mg/m2. Then you will have 23 days without temozolo-mide. This adds up to a 28-day treatment cycle.

After Day 28, the next cycle will begin. You will again take temozolomide once daily for 5 days followed by 23 days without temozolomide. The temozolomide dose may be adjusted, delayed or stopped depending on your blood counts and how you tolerate your medicine during each treatment cycle.

Patients with tumours that have returned or worsened (malignant glioma, such as glioblastoma multiforme or anaplastic astrocytoma) taking temozolomide only: A treatment cycle with temozolomide lasts 28 days.

You will take temozolomide alone once daily for the first 5 days. This daily dose depends on whether or not you have received chemotherapy before. If you have not been previously treated with chemotherapy, your first dose of temozolomide will be 200 mg/m2 once daily for the first 5 days. If you have been previously treated with chemotherapy, your first dose of temozolomide will be 150 mg/m2 once daily for the first 5 days.

Then, you will have 23 days without temozolomide. This adds up to a 28-day treatment cycle.

After Day 28, the next cycle will begin. You will again receive temozolomide once daily for 5 days, followed by 23 days without temozolomide.

Before each new treatment cycle, your blood will be tested to see if the temozolo-mide dose needs to be adjusted. Depending on your blood test results, your doctor may adjust your dose for the next cycle.

How to take Temozolomide:

Take your prescribed dose of temozolomide capsules once a day, preferably at the same time each day.

Take the capsules on an empty stomach; for example, at least one hour before you plan to eat breakfast. Swallow the capsule(s) whole with a glass of water. Do not open, crush or chew the capsules. If a capsule is damaged, avoid contact of the powder with your skin, eyes or nose. If you accidentally get some in your eyes or nose, flush the area with water.

Depending on the prescribed dose, you may have to take more than one capsule together, eventually with different strengths (content of active substance, in mg). The colour of the capsule cap is different for each strength (see in the table below).

StrengthColour of the cap
Temozolomide 5 mg hard capsulesgreen
Temozolomide 20 mg hard capsulesyellow
Temozolomide 100 mg hard capsulespink
Temozolomide 140 mg hard capsulesblue
Temozolomide 180 mg hard capsulesbrown
Temozolomide 250 mg hard capsuleswhite

You should make sure you fully understand and remember the following:

  • how many capsules you need to take every dosing day. Ask your doctor or

    pharmacist to write it down (including the colour).

  • which days are your dosing days.

Review the dose with your doctor each time you start a new cycle, since it may be different from the last cycle.

Always take temozolomide capsules exactly as your doctor has told you. It is very important to check with your doctor or pharmacist if you are not sure. Errors in how you take this medicine may have serious health consequences. If you take more temozolomide capsules than you should

If you accidentally take more temozolomide capsules than you were told to, contact your doctor, pharmacist or nurse immediately.

If you forget to take temozolomide capsules

Take the missed dose as soon as possible during the same day. If a full day has gone by, check with your doctor. Do not take a double dose to make up for a forgotten dose, unless your doctor tells you to do so.

If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Contact your doctor immediately if you have any of the following:

  • a severe allergic (hypersensitive) reaction (hives, wheezing or other breathing

    difficulty),

  • uncontrolled bleeding,
  • seizures (convulsions),
  • fever,
  • chills,
  • severe headache that does not go away.

Temozolomide treatment can cause a reduction in certain kinds of blood cells. This may cause you to have increased bruising or bleeding, anaemia (a shortage of red blood cells), fever, and reduced resistance to infections. The reduction in blood cell counts is usually short-lived. In some cases, it may be prolonged and may lead to a very severe form of anaemia (aplastic anaemia). Your doctor will monitor your blood regularly for any changes, and will decide if any specific treatment is needed. In some cases, your temozolomide dose will be reduced or treatment stopped.

Other side effects that have been reported are listed below:

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

  • loss of appetite, difficulty speaking, headache
  • vomiting, nausea, diarrhoea, constipation
  • rash, hair loss
  • tiredness

Common side effects (may affect up to 1 in 10 people):

  • infections, oral infections
  • reduced number of blood cells (neutropenia, lymphopenia, thrombocytopenia)
  • allergic reaction
  • increased blood sugar
  • memory impairment, depression, anxiety, confusion, inability to fall asleep or stay asleep
  • impaired coordination and balance
  • difficulty concentrating, change in mental status or alertness, forgetfulness,
  • dizziness, impaired sensations, tingling sensation, shaking, abnormal taste
  • partial loss of vision, abnormal vision, double vision, painful eyes
  • deafness, ringing in the ears, earache
  • blood clot in lungs or legs, high blood pressure
  • pneumonia, shortness of breath, bronchitis, cough, inflammation of your sinuses
  • stomach or abdominal pain, upset stomach/heartburn, difficulty swallowing
  • dry skin, itching
  • muscle damage, muscle weakness, muscle aches and pains
  • painful joint, back pain
  • frequent urination, difficulty withholding your urine
  • fever, flu-like symptoms, pain, feeling unwell, a cold or the flu
  • fluid retention, swollen legs
  • liver enzyme elevations
  • loss of weight, weight gain
  • radiation injury

Uncommon side effects (may affect up to 1 in 100 people):

  • brain infections (meningoencephalitis herpetic) including fatal cases
  • wound infection
  • new or reactivated cytomegalovirus infections
  • reactivated hepatitis B virus infections
  • secondary cancers including leukaemia
  • reduced blood cell counts (pancytopenia, anaemia, leukopenia)
  • red spots under the skin
  • diabetes insipidus (symptoms include increased urination and feeling thirsty), low potassium level in the blood
  • mood swings, hallucination
  • partial paralysis, change in your sense of smell
  • hearing impairment, infection of the middle ear
  • palpitations (when you can feel your heart beat), hot flushes
  • swollen stomach, difficulty controlling your bowel movements, haemorrhoids, dry mouth
  • hepatitis and injury to the liver (including fatal liver failure), cholestasis, increased bilirubin
  • blisters on body or in mouth, skin peeling, skin eruption, painful reddening of the skin, severe rash with skin swelling (including palms and soles)
  • increased sensitivity to sunlight, urticaria (hives), increased sweating, change in skin colour
  • difficulty in urinating
  • vaginal bleeding, vaginal irritation, absent or heavy menstrual periods, breast pain, sexual impotence
  • shivering, face swelling, discolouration of the tongue, thirst, tooth disorder
  • dry eyes

Reporting of side effects

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 the yellow card scheme at: www.mhra.gov.uk/yellow card or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can provide more information on the safety of this medicine.

5. How to store temozolomide capsules

Keep this medicine out of the sight and reach of children, preferably in a locked cupboard. Accidental ingestion can be lethal for children.

Do not use this medicine after the expiry date which is stated on the label and carton ‘EXP’. The expiry date refers to the last day of that month.

Bottle presentation

Do not store above 30 °C.

Store in the original bottle in order to protect from moisture.

Keep the bottle tightly closed.

Do not use this medicine if you notice any change in the appearance of the capsules. 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.

6. Contents of the pack and other information

What Temozolomide contains

The active substance is temozolomide.

Temozolomide 5 mg hard capsules: Each capsule contains 5mg of temozolomide Temozolomide 20 mg hard capsules: Each capsule contain 20 mg of temozolomide Temozolomide 100 mg hard capsules: Each capsule contains 100 mg temozolomide.

Temozolomide 140 mg hard capsules: Each capsule contains 140 mg temozolomide.

Temozolomide 180 mg hard capsules: Each capsule contains 180 mg temozolomide.

Temozolomide 250 mg hard capsules: Each capsule contains 250 mg temozolomide.

The other ingredients are:

Capsule content

Anhydrous lactose, colloidal anhydrous silica, sodium starch glycolate type A, tartaric acid, stearic acid (see section 2 "Temozolomide contains lactose"). Capsule shell

Temozolomide 5 mg hard capsules: gelatin, titanium dioxide (E 171), sodium lauryl sulfate, yellow iron oxide (E 172), Patent Blue V (E131) Temozolomide 20 mg hard capsules: gelatin, titanium dioxide (E 171), sodium lauryl sulfate, yellow iron oxide (E 172),

Temozolomide 100 mg hard capsules: gelatin, titanium dioxide (E 171), sodium lauryl sulfate, red iron oxide (E 172),

Temozolomide 140 mg hard capsules: gelatin, titanium dioxide (E 171), sodium lauryl sulfate, carmosine (E 122), patent blue V (E131)

Temozolomide 180 mg hard capsules: gelatin, titanium dioxide (E 171), sodium lauryl sulfate, yellow iron oxide (E 172), and red iron oxide (E 172), Temozolomide 250 mg hard capsules: gelatin, titanium dioxide (E 171), sodium lauryl sulfate.

Printing ink

Shellac, dehydrated alcohol; Isopropyl alcohol; butyl alcohol; propylene glycol; strong ammonia solution, potassium hydroxide, purified water and black iron oxide (E 172).

What temozolomide looks like and contents of the pack

Temozolomide 5 mg hard capsules have an opaque white body, an opaque green cap, and are imprinted with black ink.

Temozolomide 20 mg hard capsules have an opaque white body, an opaque yellow cap, and are imprinted with black ink.

Temozolomide 100 mg hard capsules have an opaque white body, an opaque pink cap, and are imprinted with black ink.

Temozolomide 140 mg hard capsules have an opaque white body, a blue cap and are imprinted with black ink.

Temozolomide 180 mg hard capsules have an opaque white body, an opaque brown cap, and are imprinted with black ink.

Temozolomide 250 mg hard capsules have a opaque white body and cap and are imprinted with black ink.

Bottle presentation

The hard capsules for oral use are dispensed in amber glass bottles containing 5 capsules.

The carton contains 1 or 4 bottles.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder:

Reliance Life Sciences Europe Limited

Milne O'dwyer, Beck House, Kilbride Street, Tullamore,

Offaly, Ireland R35 D4F1.

Manufacturer:

GMP Manufacturing Limited

Marfleet House, Valletta Street

Hull HU9 5NP United Kingdom

Distributor:

Cipla (EU) Limited

Dixcart House, Addlestone Road,

Bourne Business Park, Addlestone, Surrey,

KT15 2LE, United Kingdom

This leaflet was last revised in April 2025.

Other sources of information

Detailed information on this medicine is available on the European Medicines Agency web site: http://www.ema.europa.eu.

Temozolomide Leaflet - CIPLA (UK) Size : 240 mm x 400 mm

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 60477/0011

Last revision stated in the text: April 2025 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

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

Facts about Temozolomide Reliance 100 mg hard capsules

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Temozolomide
Strength 100 mg
Pharmaceutical form Oral capsule
The 100 mg hard capsules have an opaque white body, an opaque pink cap, and are imprinted with black ink. The cap is imprinted with “Temozolomide”. The body is imprinted with "100 mg".
How is it taken Oral
Excipients Anhydrous lactose,, Colloidal anhydrous silica,, Sodium starch glycolate type A,, Tartaric acid,, Stearic acid., GelatinTitanium dioxide (E 171),, Sodium lauryl sulfate,, Iron oxide red (E172)., Shellac,, Dehydrated Alcohol,, Isopropyl Alcohol,, Butyl Alcohol, Propylene glycol,, Strong ammonia solution,, Potassium hydroxide,, Black iron oxide (E 172)., Purified water
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 2 years
Storage Do not store above 30 °C.
Store in the original bottle in order to protect from moisture.
Keep the bottle tightly closed.
Drug group (ATC) Antineoplastic agents - Other alkylating agents
  1. L Antineoplastic and immunomodulating agents
    1. L01 Antineoplastic agents
      1. L01A Alkylating agents
        1. L01AX Other alkylating agents
          1. L01AX03 temozolomide
Marketing authorisation PL 60477/0011 (first authorised 6 December 2024)
Marketing authorisation holder Reliance Life Sciences Europe Limited
Codes BNF 08010500

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.