Like all medicines, this medicine can cause side effects, although not everybody gets them.
Most side effects are mild to moderate but some may be serious and require treatment. Rarely, some of these reactions have been fatal.
During or within the first 24 hours of the infusion you may develop fever, chills and shivering. Less frequently, some patients may experience pain at the infusion site, blisters, itching, sickness (nausea), tiredness, headache, breathing difficulties, blood pressure raised, wheezing, throat discomfort, tongue or throat swelling, itchy or runny nose, vomiting, flushing or palpitations, heart attack or low number of platelets. If you have heart disease or angina, these reactions might get worse. Tell the person giving you the infusion immediately if you or your child develops any of these symptoms, as the infusion may need to be slowed down or stopped. You may require additional treatment such as an antihistamine or paracetamol. When these symptoms go away, or improve, the infusion can be continued. These reactions are less likely to happen after the second infusion. Your doctor may decide to stop your MabThera treatment if these reactions are serious.
Tell your doctor immediately if you or your child gets signs of an infection including:
- fever, cough, sore throat, burning pain when passing urine or feeling weak or generally unwell,
- memory loss, trouble thinking, difficulty walking or sight loss – these may be due to a very rare, serious brain infection, which has been fatal (Progressive Multifocal Leukoencephalopathy or PML),
- fever, headache and stiff neck, incoordination (ataxia), personality change, hallucinations, altered consciousness, seizures or coma – these may be due to a serious brain infection (enteroviral meningoencephalitis), which can be fatal.
You might get infections more easily during your treatment with MabThera.
These are often colds, but there have been cases of pneumonia, urinary infections and serious viral infections. These are listed below under “Other side effects”.
If you are being treated for rheumatoid arthritis, granulomatosis with polyangiitis, microscopic polyangiitis or pemphigus vulgaris, you will also find this information in the Patient Alert Card you have been given by your doctor. It is important that you keep this Alert Card and show it to your partner or caregiver.
a) If you or your child are being treated for non-Hodgkin’s Lymphoma or chronic lymphocytic leukaemia
Very common side effects (may affect more than 1 in 10 people):
- bacterial or viral infections, bronchitis,
- low number of white blood cells, with or without fever or blood cells called “platelets”,
- feeling sick (nausea),
- bald spots on the scalp, chills, headache,
- lower immunity – because of lower levels of anti-bodies called “immunoglobulins” (IgG) in the blood which help protect against infection.
Common side effects (may affect up to 1 in 10 people):
- infections of the blood (sepsis), pneumonia, shingles, cold, bronchial tube infections, fungal infections, infections of unknown origin, sinus inflammation, hepatitis B,
- low number of red blood cells (anaemia), low number of all blood cells,
- allergic reactions (hypersensitivity),
- high blood sugar level, weight loss, swelling in the face and body, high levels of the enzyme “LDH” in the blood, low calcium levels in the blood,
- unusual feelings of the skin – such as numbness, tingling, pricking, burning, a creeping skin feeling, reduced sense of touch,
- feeling restless, problems falling asleep,
- becoming very red in the face and other areas of the skin as a consequence of dilation of the blood vessels,
- feeling dizzy or anxious,
- producing more tears, tear duct problems, inflamed eye (conjunctivitis),
- ringing sound in the ears, ear pain,
- heart problems – such as heart attack, uneven or fast heart rate,
- high or low blood pressure (low blood pressure especially when standing upright),
- tightening of the muscles in the airways which causes wheezing (bronchospasm), inflammation, irritation in the lungs, throat or sinuses, being short of breath, runny nose,
- being sick (vomiting), diarrhoea, pain in the stomach, irritation or ulcers in the throat and mouth, problems swallowing, constipation, indigestion,
- eating disorders, not eating enough, leading to weight loss,
- hives, increased sweating, night sweats,
- muscle problems – such as tight muscles, joint or muscle pain, back and neck pain,
- tumour pain,
- general discomfort or feeling uneasy or tired, shaking, signs of flu,
- multiple-organ failure.
Uncommon side effects (may affect up to 1 in 100 people):
- blood clotting problems, decrease of red blood cell production and increase of red blood cell destruction (aplastic haemolytic anaemia), swollen or enlarged lymph nodes,
- low mood and loss of interest or enjoyment in doing things, feeling nervous,
- taste problems – such as changes in the way things taste,
- heart problems – such as reduced heart rate or chest pain (angina),
- asthma, too little oxygen reaching the body organs,
- swelling of the stomach.
Very rare side effects (may affect up to 1 in 10, 000 people):
- short term increase in the amount of some types of anti-bodies in the blood (called immunoglobulins – IgM), chemical disturbances in the blood caused by break-down of dying cancer cells,
- nerve damage in arms and legs, paralysed face,
- heart failure,
- inflammation of blood vessels including those leading to skin symptoms,
- respiratory failure,
- damage to the intestinal wall (perforation),
- severe skin problems causing blisters that can be life-threatening. Redness, often associated with blisters, may appear on the skin or on mucous membranes, such as inside the mouth, the genital areas or the eyelids, and fever may be present,
- kidney failure,
- severe vision loss,
Not known (it is not known how often these side effects happen):
- a reduction in white blood cells which does not happen straight away,
- reduced platelets number just after the infusion – this can be reversed, but can be fatal in rare cases,
- hearing loss, loss of other senses,
- brain and meningeal infection/inflammation (enteroviral meningoencephalitis).
Children and adolescents with non-Hodgkin’s lymphoma:
In general, side effects in children and adolescents with non-Hodgkin’s lymphoma were similar to those in adults with non-Hodgkin’s lymphoma or chronic lymphocytic leukaemia. The most common side effects seen were fever associated with low levels of a type of white blood cell (neutrophil), inflammation or sores in the lining of the mouth, and allergic reactions (hypersensitivity).
b) If you are being treated for rheumatoid arthritis
Very common side effects (may affect more than 1 in 10 people):
- infections such as pneumonia (bacterial),
- pain on passing water (urinary tract infection),
- allergic reactions that are most likely to occur during an infusion, but can occur up-to 24-hours after infusion,
- changes in blood pressure, nausea, rash, fever, feeling itchy, runny or blocked nose and sneezing, shaking, rapid heart beat, and tiredness,
- headache,
- changes in laboratory tests carried out by your doctor. These include a decrease in the amount of some specific proteins in the blood (immunoglobulins) which help protect against infection.
Common side effects (may affect up to 1 in 10 people):
- infections such as bronchial tube inflammation (bronchitis),
- a feeling of fullness or a throbbing pain behind the nose, cheeks and eyes (sinusitis), pain in the abdomen, vomiting and diarrhoea, breathing problems,
- fungal foot infection (athlete’s foot),
- high cholesterol levels in the blood,
- abnormal sensations of the skin, such as numbness, tingling, pricking or burning, sciatica, migraine, dizziness,
- loss of hair,
- anxiety, depression,
- indigestion, diarrhoea, acid reflux, irritation and /or ulceration of the throat and the mouth,
- pain in the tummy, back, muscles and/or joints.
Uncommon side effects (may affect up to 1 in 100 people):
- excess fluid retention in the face and body,
- inflammation, irritation and / or tightness of the lungs, and throat, coughing,
- skin reactions including hives, itching and rash,
- allergic reactions including wheezing or shortness of breath, swelling of the face and tongue, collapse.
Very rare side effects (may affect up to 1 in 10, 000 people):
- a complex of symptoms occurring within a few weeks of an infusion of MabThera including allergic like reactions such as rash, itching, joint pain, swollen lymph glands and fever,
- severe blistering skin conditions that can be life-threatening. Redness, often associated with blisters, may appear on the skin or on mucous membranes, such as inside the mouth, the genital areas or the eyelids, and fever may be present.
Not known (frequency cannot be estimated from the available data):
- serious viral infection,
- brain and meningeal infection/inflammation (enteroviral meningoencephalitis).
Other rarely reported side effects due to MabThera include a decreased number of white cells in the blood (neutrophils) that help to fight against infection. Some infections may be severe (please see information on Infections within this section).
c) If you or your child are being treated for granulomatosis with polyangiitis or microscopic polyangiitis
Very common side effects (may affect more than 1 in 10 people):
- infections, such as chest infections, urinary tract infections (pain on passing water), colds and herpes infections,
- allergic reactions that are most likely to occur during an infusion, but can occur up-to 24-hours after infusion,
- diarrhoea,
- coughing or shortness of breath,
- nose bleeds,
- raised blood pressure,
- painful joints or back,
- muscle twitches or shakiness,
- feeling dizzy,
- tremors (shakiness, often in the hands),
- difficulty sleeping (insomnia),
- swelling of the hands or ankles.
Common side effects (may affect up to 1 in 10 people):
- indigestion,
- constipation,
- skin rashes, including acne or spots,
- flushing or redness of the skin,
- fever,
- blocked or runny nose,
- tight or painful muscles,
- pain in the muscles or in the hands or feet,
- low number of red blood cells (anaemia),
- low numbers of platelets in the blood,
- an increase in the amount of potassium in the blood,
- changes in the rhythm of the heart, or the heart beating faster than normal.
Very rare side effects (may affect up to 1 in 10, 000 people):
- severe blistering skin conditions that can be life-threatening. Redness, often associated with blisters, may appear on the skin or on mucous membranes, such as inside the mouth, the genital areas or the eyelids, and fever may be present,
- recurrence of a previous Hepatitis B infection.
Not known (frequency cannot be estimated from the available data):
- serious viral infection,
- brain and meningeal infection/inflammation (enteroviral meningoencephalitis),
Children and adolescents with granulomatosis with polyangiitis or microscopic polyangiitis
In general, side effects in children and adolescents with granulomatosis with polyangiitis or microscopic polyangiitis were of a similar type to those in adults with granulomatosis with polyangiitis or microscopic polyangiitis. Most common side effects seen were infections, allergic reactions and feeling sick (nausea).
d) If you are being treated for pemphigus vulgaris
Very common side effects (may affect more than 1 in 10 people):
- allergic reactions that are most likely to occur during an infusion, but can occur up to 24 hours after infusion,
- headache,
- infections such as chest infections,
- long lasting depression,
- loss of hair.
Common side effects (may affect up to 1 in 10 people):
- infections such as common cold, herpes infections, eye infection, oral thrush and urinary tract infections (pain on passing urine),
- mood disorders such as irritability and depression,
- skin disorders such as itching, hives, and benign lumps,
- feeling tired or dizzy,
- fever,
- painful joints or back,
- pain in the tummy,
- pain in the muscles,
- heart beating faster than normal.
Not known (frequency cannot be estimated from the available data):
- serious viral infection,
- brain and meningeal infection/inflammation (enteroviral meningoencephalitis).
MabThera may also cause changes in laboratory tests carried out by your doctor.
If you are having MabThera with other medicines, some of the side effects you may get may be due to the other medicines.