Very common (affect more than 1 in 10 people)
Nausea.
Sexual problems.
Common (affect between 1 in 10 and 1 in 100 people)
Decreased appetite.
Raised levels of cholesterol in the blood.
Sleepiness.
Difficulty in sleeping (insomnia).
Abnormal dreams and nightmares.
Dizziness.
Agitation.
Shaking, usually of the hands (tremor).
Headache.
Blurred vision.
Yawning.
Disturbances of the gut such as diarrhoea, constipation, vomiting and dry mouth.
Weakness or loss of strength (asthenia).
Sweating.
Weight gain.
Uncommon (affect between 1 in 100 and 1 in 1000 people)
Confusion.
Hallucinations.
Abnormal bleeding, usually in the skin and seen as bruises.
Skin reactions such as rash and itch.
Faster than normal heart beat (tachycardia).
Changes in blood pressure.
Rare (affect between 1 in 1000 and 1 in 10,000 people)
Convulsions.
Anxiety and panic attacks.
Mania.
Unpleasant or distressing restlessness and inability to sit still (akathisia - see warning section above).
Restless legs syndrome.
Decreased level of sodium in the blood (mostly in elderly people).
Very rare (affect less than 1 in 10,000 people)
Decreased numbers of platelets in the blood (thrombocytopenia).
Acute glaucoma.
Liver disorders.
Bleeding in the gut.
Persistent painful erection of the penis (priapism).
Allergic reaction involving swelling of the face, throat, lips or tongue (angioedema).
The side effects listed above may not include all of the side effects reported by the medicine's manufacturer.