Like all medicines, this medicine can cause side effects, although not everybody gets them.
If you experience any of the following serious unwanted effects, you should tell your doctor immediately (these effects are more likely to occur in elderly patients):
Very common: may affect more than 1 in 10 people
Drowsiness, fatigue, sedation
Common: may affect up to 1 in 10 people
Dizziness, muscle weakness, Asthenia (loss of strength), Ataxia (poor muscle control), Confusion, Depression, unmasking of depression (revealing signs of depression that were previously hidden)
Uncommon: may affect up to 1 in 100 people
Nausea, Change in libido, Impotence, Decreased orgasm
Not known: frequency cannot be estimated from the available data
Increased sensitivity to light, sound and touch; Convulsions/fits, constipation, yellowing of the skin and eyes, Shaking, Problems with vision (double and blurred vision), Slurred speech, Headache, Memory loss, Heightened emotions, Coma, Impaired attention/concentration, Loss of inhibitions, Thoughts or attempts of suicide, Increase in specific liver enzymes (bilirubin, liver transaminases and alkaline phosphatase), Anxiety, excitation, hostility, aggression, sexual arousal, balance disorder, Difficulty breathing, Difficulty breathing when you are asleep, Worsening of lung disease, Allergic skin reactions (e.g. rash, swelling), Alopecia (loss of hair from the head or body), Hypersensitivity reactions, Angioedema (swelling of the face, hands and feet), SIADH - syndrome of inappropriate antidiuretic hormone hypersecretion (a condition in which the body produces too much antidiuretic hormone (ADH). Increased ADH may cause too much water to remain inside your body.), Hyponatremia (low level of sodium in the blood which can cause tiredness and confusion, muscle twitching, fits and coma), Hypothermia, Lowering of blood pressure, Thrombocytopenia (unexplained bruising, nosebleeds and/or bleeding gums), agranulocytosis (severe infection), pancytopenia (bleeding, bruising easily, fatigue, shortness of breath, and weakness), Vertigo, Problems sleeping, Drug abuse, dependence and addiction (see section “How do I know if I am tolerant or addicted?”), Drug withdrawal syndrome.
The following side effects may be more likely to occur in elderly patients:
- Restlessness
- Agitation
- Irritability
- Aggressiveness
- Violent anger
- Nightmares
- Hallucinations
- Personality changes
- Abnormal behaviour
- False beliefs
If any of the side-effects get serious, or if you notice any side-effects not listed in this leaflet, please tell your doctor or pharmacist.
When you stop taking lorazepam, you may experience drug withdrawal symptoms, which include: headaches, muscle pain, anxiety, tension, depression, restlessness, sweating, confusion or irritability. Do not stop taking your solution suddenly. This could lead to more serious symptoms such as loss of the sense of reality, feeling unreal or detached from life, and unable to feel emotion. Some patients have also experienced numbness or tingling of the arms or legs, tinnitus (ringing sounds in the ears), oversensitivity to light, sound and touch, uncontrolled or overactive movements, twitching, shaking, feeling sick, being sick, stomach upsets or stomach pain, loss of appetite, agitation, abnormally fast heartbeats, panic attacks, dizziness or feeling that you are about to fall, memory loss, hallucinations, feeling stiff and unable to move easily, feeling very warm, convulsions (sudden uncontrolled shaking or jerking of the body).