The frequency is classified according to the headings, depending on the occurrence of the event: very often (> 1/10), often (> 1/100), infrequently (> 1/1000), rarely (> 1/10000), very rarely (1/10000 ).
Central nervous system: infrequently - dizziness; rarely - a sense of fear, nervousness, "nightmarish dreams"; very rarely - headache, drowsiness, encephalopathy (Reye syndrome).
Gastrointestinal tract: often - diarrhea, nausea, vomiting, increase in "liver" transaminases; infrequently - constipation, flatulence, gastritis; very rarely - abdominal pain, stomatitis, tarry stool, gastrointestinal bleeding, ulcer and / or perforation of the stomach or duodenum, hepatitis, fulminant hepatitis, jaundice, cholestasis Respiratory system: infrequently - shortness of breath; very rarely - bronchial asthma, bronchospasm. The cardiovascular system: infrequently - arterial hypertension; rarely - tachycardia, "hot flashes".
Sense organs: rarely - blurred vision, very rarely - dizziness.
Skin and mucous membranes: infrequently - itching, rash, increased sweating ;, rarely: erythema, dermatitis; very rarely: urticaria, angioedema, facial swelling, multiform exudative erythema, incl. Stevens-Johnson syndrome, toxic epidermal necrolysis (Lyell's syndrome).
Kidney and urinary system: infrequently - swelling; rarely - dysuria, hematuria, urinary retention, hyperkalemia; very rarely - renal failure, oliguria, interstitial nephritis.
Hematopoiesis: rarely - anemia, eosinophilia; very rarely - thrombocytopenia, pancytopenia, hemorrhage, purpura, prolongation of bleeding time.
Allergic reactions: rarely - hypersensitivity reactions; very rarely anaphylactoid reactions.
Other: rarely - general weakness; very rarely - hypothermia.