Please tell your doctor if any of the following gets serious or lasts longer than a few days. • Difficulty concentrating • Swollen mouth • Blood tests showing too few blood cells in your blood • Blood tests showing less sodium than usual in your blood • Fingers and toes changing colour when you are cold and then tingling or feeling painful when you warm up (Raynaud's phenomenon) • Breast enlargement in men • Slowed or impaired reactions • Burning sensation • Change in the way things smell • Hair loss.