Allergic reactions; hypoglycemia; insomnia, depression, nightmares, memory loss, hallucination; fainting, stroke, reduced blood supply to the brain, increases in signs & symptoms of myasthenia gravis, dizziness, unusual sensations (eg, tingling or pins & needles), headache; eye irritation, visual disturbances & other eye problems; tinnitus; bradycardia, chest pain, palpitations, oedema, arrhythmia, CHF, heart attack, heart failure; low BP, Raynaud's phenomenon, cold hands & feet, limping; airway constriction, difficulty breathing, dyspnea, wheezing, cough; taste disturbances, nausea, indigestion, diarrhoea, dry mouth, abdominal pain, vomiting; sexual dysfunction, decreased libido, Peyronie's disease; alopecia, psoriasiform rash, worsening psoriasis, skin rash, itching; muscle weakness/tiredness, muscle pain not caused by exercise; SLE.