From the digestive system: nausea, decreased appetite, abdominal pain, flatulence, constipation or diarrhea, erosive and ulcerative lesions of the gastrointestinal tract, bleeding and perforation of the gastrointestinal tract; impaired liver function, increased activity of "liver" transaminases; dry mouth, stomatitis.
From the nervous system: dizziness, headache, drowsiness, insomnia, depression, irritability, hallucinations, paresthesia, inhibition, mood change.
From the urinary system: renal dysfunction, interstitial nephritis, papillary necrosis, nephrotic syndrome.
On the part of the organs of hematopoiesis and the system of hemostasis: anemia (including aplastic anemia, hemolytic anemia), leukopenia, eosinophilia, thrombocytopenia, decreased hematocrit; thrombocytopenic purpura.
From the cardiovascular system: increase or decrease in blood pressure, rarely - palpitation, dyspnea.
Other: swelling of the legs and feet, sweating, increased urea levels in the blood; hypoglycemia.
Allergic reactions: skin rash, itching, facial swelling, larynx, bronchospasm, malignant exudative erythema (Stevens-Johnson syndrome), shock, photosensitivity; vasculitis, serum sickness.