Uncommon side effects include (occurs in less than 1 patient of 100): thrombocytopenia (low platelets, which may result in easy bleeding), leukopenia (low white blood cells), gout, nervousness, tremor (trembling), blurred vision, tinnitus (ringing or noise in the ears), vertigo (a feeling of dizziness or ‘ spinning’), arrythmia (a feeling of irregular heart beat), tachycardia (increased heart rate), palpitations, angina pectoris, myocardial infarction (heart attack), cerebrovascular accident (stroke), dyspnoea (shortage of breath), cough, bronchial spasms, epistaxis (nosebleed), anorexia (loss of appetite), obstipation (constipation), increased appetite, icterus (jaundice), liver enzyme increases, rash, pruritus (itching), purpura (rash caused by bleeding under the skin), myalgia (painful muscles), arthralgia (painful joints), muscle cramps, increased diuresis (increased volume of urine passed), haematuria (blood in the urine), urinary incontinence, priapism (painful persistent erection), impotence, chest pain, agitation, facial flushing.