Uncommon side effects (these can affect from 1 to 10 users in 1,000 patients treated) • Throat inflammation. • Feeling agitated, feeling disorientated, feeling sleepy, having a poor quality of sleep, lack of motivation or increased yawning. • Tasting things differently than usual, disturbance in attention or spasms and involuntary movements of the muscles. • Weight loss or weight gain, burping, indigestion or gastroenteritis. • Inflammation of the liver that may cause abdominal pain, tiredness or yellow coloration of the skin. • Vertigo, tinnitus (perception of sound in the ear when there is no external sound, ear pain. • Larger pupils (the dark centre of the eye) or visual disturbance. • Flushing, increase in blood pressure, feeling cold in your fingers and/ or toes, feeling dizzy (particularly when standing up too quickly), fast or irregular heart beat, night sweats, cold sweats, shivering or fainting. • Changes in ejaculation, abnormal periods, including heavy or prolonged periods • Allergic reactions, increased tendency to bruise, blisters or sensitivity to sunlight. • Muscle twitching. • Need to pass urine during the night or difficulty or inability to pass urine. • Grinding of teeth, dehydration, feeling hot/ cold, thirst, throat tightness or nose bleeds • Increased level of cholesterol in the blood.