Generalised allergic reactions, particularly swelling under the skin, hives, localised or generalised skin eruptions, itching, sudden onset & serious allergic reaction; hypoglycaemia; insomnia, depression, nightmares, loss of memory; loss of consciousness, stroke, decreased blood flow to the brain, increase in signs & symptoms of myasthenia gravis, dizziness, unusual sensations, headache; signs & symptoms of ocular irritation (eg, burning sensation, stinging, itching, watery eyes, redness), inflammation of the eyelid, conjunctival redness, conjunctivitis, inflammation of the cornea, blurred vision & detachment of the sub-retinal layer containing blood vessels following filtration surgery, decreased corneal sensitivity, dry eyes, corneal erosion, upper eyelid sagging, double vision, visual disorders including changes in the refraction index; slow pulse, chest pain, palpitations, oedema, changes in heart rhythm & rate, CHF, certain type of heart rhythm disorder, heart attack, heart failure; hypotension, Raynaud's phenomenon, cold hands & feet, claudication; constriction of the pulmonary airways, breathing difficulties, coughing; taste disorders, nausea, indigestion, diarrhoea, dry mouth, abdominal pain, vomiting; hair loss, psoriasis-like outbreaks or worsening of psoriasis, skin eruptions; muscular pain not due to exercise, SLE; sexual disorders, loss of libido, impotence; weakness/muscular fatigue; positive results during tests for anti-nuclear antibodies.