Headache, dizziness; luminous phenomena (phosphenes); blurred vision; bradycardia, 1st-degree AV block, ventricular extrasystoles; uncontrolled BP, eosinophilia, hyperuricaemia, syncope, diplopia, visual impairment, vertigo, palpitations, supraventricular extrasystoles, hypotension, dyspnoea, nausea, constipation, diarrhoea, abdominal pain, angioedema, rash, muscle cramps, asthenia, fatigue, elevated creatinine in blood, ECG prolonged QT interval, erythema, pruritus, urticaria, malaise, atrial fibrillation, AV 2nd- & 3rd-degree block, sick sinus syndrome.