Upper respiratory tract infection (e. g. sore throat, inflamed sinuses, common cold), deficiency in red blood cells (anaemia), low platelet count (thrombocytopenia), feeling anxious, feeling sad (depression), impaired vision, fast heart beat (tachycardia), dizziness on standing up (orthostatic hypotension), upset stomach, vomiting, abnormal liver function, redness of skin, rapid swelling of the skin and mucosa (angioedema), hives (urticaria), joint pain (arthralgia), back pain, muscle cramps, pain in extremity, symptoms of weakness, flu-like-illness, increased levels of uric acid, creatinine, hepatic enzymes or creatine phosphokinase in the blood.