Dizziness, flushing, headache, hypotension, peripheral oedema, tachycardia, & palpitations. Nausea & other GI disturbances, increased micturition frequency, lethargy, eye pain, visual disturbances, & mental depression. Paradoxical increase in ischaemic chest pain & excessive fall in BP leading to cerebral or myocardial ishcaemia or transient blindness. Rashes (including erythema multiforme), fever & abnormalities in liver function including cholestasis. Gingival hyperplasia, myalgia, tremor & impotence.