Uncommon (affecting less than one person in 100 but more than one person in 1,000): low levels of potassium in the blood, gout, increased thirst, nightmares, forgetfulness (amnesia), emotional instability, tremor, muscle stiffness, increased tear production, abnormal intolerance to light, ringing in the ears (tinnitus), heart flutters, angina, an increase or slowing of the heart rate, heart attack, low blood pressure especially on getting up from a sitting or lying position, vascular problems, nose bleeds, tightening of the chest, cough, throat inflammation, eating disorders (anorexia), increased appetite, taste disturbances, hair loss, swelling of the face and joints, joint pain, muscle weakness, incontinence, difficulty with or pain on urinating, flushing, fever (shivers) and loss of colour.