Rare (affecting less than one person in 1,000 but more than one person in 10,000): depression, high blood sugar levels, agitation, pins and needles, blurred vision, stroke, swelling of the voice box, stomach pain, diarrhoea, vomiting (being sick), jaundice, increased liver enzymes in the blood, rash, itching or reddening of 22/ 24 the skin, impotence, painful, persistent erection of the penis and low body temperature (especially in the elderly).