INVEGA can have side effects
Not all side effects reported for INVEGA are included in this leaflet. Should your general health worsen or if you experience any untoward effects while taking INVEGA, please consult your doctor, pharmacist or other healthcare provider for advice.
Severe allergic reaction characterised by fever, swollen mouth, face, lip or tongue, shortness of breath, itching, skin rash and sometimes drop in blood pressure (amounting to an ‘anaphylactic reaction’) can occur. If this occurs, seek medical attention immediately.
In elderly patients with dementia, INVEGA has been associated with side effects including sudden weakness or numbness of the face, arms, or legs, instances of slurred speech, or blurred vision. These symptoms may be associated with stroke. If any of these occur, even for a short period of time, seek medical attention immediately.
If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, tell your doctor or pharmacist. These are all serious side effects. You may need urgent medical attention.
Tell your doctor if you notice any of the following:
Frequent side effects:
- Feeling sleepy or less alert; headache
- Common cold symptoms; sinus infection
- Weight gain; increased appetite
- Difficulty falling or staying asleep; elated mood (mania); irritability; depression; anxiety
- Parkinsonism (this condition may include slow or impaired movement, sensation of stiffness or tightness of the muscles (making your movements jerky), and sometimes even a sensation of movement “freezing up” and then restarting. Other symptoms of Parkinsonism include a slow shuffling walk, a tremor while at rest, increased saliva and/or drooling, and a loss of expression on the face.
- Dystonia (this is a condition involving slow or sustained involuntary contraction of muscles. While it can involve any part of the body (and may result in abnormal posture), dystonia often involves muscles of the face, including abnormal movements of the eyes, mouth, tongue, or jaw.
- Dyskinesia (this is a condition involving involuntary muscle movements, and can include repetitive, spastic, or writhing movements, or twitching)
- Restlessness; dizziness; problems with speech; tremor (shaking)
- Blurry vision
- Abnormal electric conduction of the heart; prolongation of the QT interval from your heart; rapid heart rate
- Low blood pressure upon standing (consequently, some people taking INVEGA may feel faint, dizzy, or may pass out when they stand up or sit up suddenly); high blood pressure
- Cough; stuffy nose
- Abdominal pain or discomfort; vomiting; nausea; constipation; diarrhoea; indigestion; dry mouth; toothache
- Itching
- Bone or muscle ache; back pain
- Fever; weakness; fatigue (tiredness)
Less frequent:
- Infection of the chest (bronchitis); infection of the breathing passages; urinary tract infection; ear infection; tonsillitis; feeling like you have the flu
- Anaemia
- High blood sugar; weight loss; loss of appetite resulting in malnutrition and low body weight; increased or decreased appetite; high blood triglycerides (a fat)
- Sleep disorder; inability to reach orgasm; nightmares
- Convulsion (fits); fainting; a restless urge to move parts of your body; dizziness upon standing; loss or abnormal sense of taste; reduced sensation of skin to pain and touch
- Eye infection or “pink eye”; dry eye; increased tears
- Ear pain
- An interruption in conduction between the upper and lower parts of the heart; slow heart rate; irregular heartbeat; abnormal electrical tracing of the heart (electrocardiogram or ECG); a fluttering or pounding feeling in your chest (palpitations)
- Low blood pressure (i.e. dizziness and lightheadedness and a tendency to faint)
- Shortness of breath; wheezing; sore throat; nosebleeds
- Stomach or intestinal infection; difficulty swallowing; excessive passing of gas or wind
- Increased liver enzymes in your blood
- Rash; dry skin; acne; dandruff
- An increase of CPK (creatine phosphokinase) in your blood, an enzyme which is released with muscle breakdown; muscle spasms; joint swelling; muscle weakness; neck pain; joint pain
- Incontinence (lack of control) of urine; frequent passing of urine; inability to pass urine; pain when passing urine
- Erectile dysfunction; loss of menstrual periods; leakage of milk from the breasts; breast discomfort
- Swelling of the face, mouth, eyes, or lips; swelling of the body, arms, or legs; an increase in body temperature; feeling thirsty; chest discomfort
- Fall
- Bladder infection; fungal infection of the nails; infection of the skin; skin inflammation caused by mites
- Decrease in the type of white blood cells that help you protect against infection; white blood cell count decreased; decrease in platelets (blood cells that help you stop bleeding); decrease in red blood cells.
INVEGA can raise your levels of a hormone called “prolactin” found on a blood test (which may or may not cause symptoms). When symptoms of high prolactin occur, they may include: (in men) breast swelling, difficulty in getting or maintaining erections, or other sexual dysfunction; (in women) breast discomfort, leakage of milk from the breasts, missed menstrual periods, or other problems with your cycle.
Dangerously excessive intake of water; low blood sugar; diabetes or worsening of diabetes; increased cholesterol in your blood.
Not moving or responding while awake (catatonia); sleep related eating disorder; sleep walking; decreased sexual drive; tardive dyskinesia (twitching or jerking movements that you cannot control in your face, tongue, or other parts of your body). Tell your doctor immediately if you experience involuntary rhythmic movements of the tongue, mouth, and face. Withdrawal of INVEGA may be needed.
Sudden loss of blood supply to brain (stroke or “mini” stroke); loss of consciousness; disturbance in attention; a sensation of tingling, pricking, or numbness of skin.
Oversensitivity of the eyes to light; sensation of spinning (vertigo); ringing in the ears; atrial fibrillation (an abnormal heart rhythm); decreased oxygen in parts of your body (because of decreased blood flow); flushing; trouble breathing during sleep (sleep apnea); fast, shallow breathing; a blockage in the bowels; swollen tongue; stool incontinence; chapped lips; serious allergic reaction with swelling that may involve the throat and lead to difficulty breathing; hair loss; eczema; skin redness; skin discoloration; joint stiffness; ejaculation disorder; missed menstrual periods or other problems with your cycle (females); development of breasts in men; sexual dysfunction; enlargement of the gland in your breasts; discharge from the breasts; vaginal discharge; chills; a change in the way you walk; lack of bowel muscle movements that cause blockage; eye problems during cataract surgery. During cataract surgery, a condition called intraoperative floppy iris syndrome (IFIS) can happen if you take or have taken INVEGA. If you need to have cataract surgery, be sure to tell your eye doctor if you take or have taken INVEGA.
Frequency not known:
- Severe or life-threatening rash with blisters and peeling skin that may start in and around the mouth, nose, eyes, and genitals and spread to other areas of the body (Stevens-Johnson syndrome or toxic epidermal necrolysis).
If you notice any side effects not mentioned in this leaflet, please inform your doctor or pharmacist.
Reporting of side effects
If you get 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 to SAHPRA via the “6.04 Adverse Drug Reaction Reporting Form”, found online under SAHPRA’s publications: https://www.sahpra.org.za/Publications/Index/8. By reporting side effects, you can help provide more information on the safety of INVEGA.