What is a Patient Information Leaflet and why is it useful?

The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine. It is written for patients and gives information about taking or using a medicine. It is possible that the leaflet in your medicine pack may differ from this version because it may have been updated since your medicine was packaged.

Below is a text only representation of the Patient Information Leaflet. The original leaflet can be viewed using the link above.

The text only version may be available in large print, Braille or audio CD. For further information call emc accessibility on 0800 198 5000. The product code(s) for this leaflet is: PLGB 04425/0769.

Mozobil 20 mg/ml solution for injection

Package leaflet: Information for the user

Mozobil 20 mg/ml solution for injection


Is this leaflet hard to see or read? Phone 0800 035 2525 for help.

Read all of this leaflet carefully before you start using this medicine because it contains important information for you.

  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, ask your doctor.
  • If you get any side effects, talk to your doctor or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

What is in this leaflet

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

1. What Mozobil is and what it is used for

Mozobil contains the active substance plerixafor which blocks a protein on the surface of blood stem cells. This protein “ties” blood stem cells to the bone marrow. Plerixafor improves the release of stem cells into the blood stream (mobilisation). The stem cells can then be collected by a machine that separates blood constituents (apheresis machine), and subsequently frozen and stored until your transplant.

If mobilisation is poor, Mozobil is used to help collect blood stem cells from the patient, for collection, storage and reintroduction (transplantation),

  • In adults who have lymphoma (a cancer of the white blood cells) or multiple myeloma (a cancer that affects plasma cells in the bone marrow).
  • In children age 1 to less than 18 years of age with lymphoma or solid tumours.

2. What you need to know before you use Mozobil

Do not use Mozobil

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

Warnings and precautions

Talk to your doctor before using Mozobil. Tell your doctor:

  • if you have or have had any heart problems.
  • if you have kidney problems. Your doctor may adjust the dose.
  • if you have high white blood cell counts.
  • if you have low platelet counts.
  • if you have a history of feeling faint or lightheaded on standing or sitting or have fainted before upon injections.

Your doctor may perform regular blood tests to monitor your blood cell count.

It is not recommended to use Mozobil for stem cell mobilisation if you have leukaemia (a cancer of the blood or bone marrow).

Other medicines and Mozobil

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

Pregnancy and breast-feeding

You should not use Mozobil if you are pregnant, since there is no experience with Mozobil in pregnant women. It is important to tell your doctor if you are, think you may be or are planning to become pregnant. It is recommended to use contraception if you are of child-bearing age. You should not breast-feed if you are using Mozobil, since it is not known if Mozobil is excreted in human milk.

Driving and using machines

Mozobil may cause dizziness and fatigue. Therefore, you should avoid driving if you feel dizzy, tired or unwell.

Mozobil contains sodium

This medicine contains less than 1 mmol sodium (23 mg) per dose, i.e. essentially ‘sodium-free’.

3. How to use Mozobil

Your medicine will be injected by a doctor or a nurse.

You will first receive G-CSF, then you will be given Mozobil

Mobilisation will be started by first giving you another medicine called G-CSF (granulocyte-colony stimulating factor). G-CSF will help Mozobil to work properly in your body. If you want to know more about G-CSF ask your doctor and read the corresponding package leaflet.

How much Mozobil is given?

The recommended adult dose is either a 20 mg (fixed dose) or 0.24 mg/kg body weight/day.

The recommended dose for children, 1 to less than 18 years of age is 0.24 mg/kg of body weight/day.

Your dose will depend on your body weight, which should be measured the week before you receive your first dose. If you have moderate or severe kidney problems, your doctor will reduce the dose.

How is Mozobil given?

Mozobil is given by subcutaneous injection (under your skin).

When is Mozobil given for the first time?

You will receive your first dose 6 to 11 hours before apheresis (collection of your blood stem cells).

How long will Mozobil be given?

Treatment lasts 2 to 4 consecutive days (in some cases up to 7 days), until enough stem cells have been collected for your transplant. In a few cases, enough stem cells may not be collected, and the collection attempt will be stopped.

4. Possible side effects

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

Please tell your doctor immediately if

  • shortly after receiving Mozobil, you experience rash, swelling around the eyes, shortness of breath or lack of oxygen, feeling lightheaded on standing or sitting, feeling faint or fainting
  • you have pain in the upper left abdomen (belly) or your left shoulder

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

  • diarrhoea, nausea (feeling sick), injection site redness or irritation
  • low red blood cell count by laboratory test (anaemia in children)

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

  • headache
  • dizziness, feeling tired or unwell
  • difficulty in sleeping
  • flatulence, constipation, indigestion, vomiting
  • stomach symptoms such as pain, swelling or discomfort
  • dry mouth, numbness around the mouth
  • sweating, generalised redness of the skin, joint pains, pains in muscles and bones

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

  • allergic reactions such as skin rash, swelling around the eyes, shortness of breath
  • anaphylactic reactions, including anaphylactic shock
  • abnormal dreams, nightmares

Rarely, gastrointestinal side effects may be severe (diarrhoea, vomiting, stomach pain and nausea).

Heart attacks

In clinical trials, patients with risk factors for a heart attack uncommonly suffered heart attacks after being given Mozobil and G-CSF. Please inform your doctor immediately if you experience chest discomfort.

Pins and needles and numbness

Pins and needles and numbness are common in patients being treated for cancers. About one in five patients suffered from these feelings. However, these effects do not seem to occur more frequently when you use Mozobil.

You may also have an increase in white blood cells count (leucocytosis), in your blood tests.

Reporting of side effects

If you get any side effects, talk to your doctor 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/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.

5. How to store Mozobil

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 vial.

This medicine does not require any special storage conditions.

After opening the vial, Mozobil should be used immediately.

Do not throw away any medicines via wastewater or household waste. The pharmacist will throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Mozobil contains

  • The active substance is plerixafor. Each ml solution for injection contains 20 mg plerixafor. Each vial contains 24 mg plerixafor in 1.2 ml solution.
  • The other ingredients are sodium chloride, hydrochloric acid (concentrated) and sodium hydroxide for pH adjustment and water for injections.

What Mozobil looks like and contents of the pack

Mozobil is supplied as a clear colourless or pale yellow solution for injection in a glass vial with a non-latex rubber stopper. Each vial contains 1.2 ml solution.

Each pack contains 1 vial.

Marketing Authorisation Holder

Sanofi Genzyme
410 Thames Valley Park Drive
Tel: 0800 035 2525


37 Hollands Road
United Kingdom


Genzyme Ireland Ltd.
IDA Industrial Park
Old Kilmeaden Road

This leaflet does not contain all the information about your medicine. If you have any questions or are not sure about anything, ask your doctor or pharmacist.

This leaflet was last revised in September 2021.