From the digestive system: nausea, vomiting, diarrhea, abdominal pain, flatulence, anorexia, cholestatic jaundice (especially in patients with liver disease), hepatitis, hepatonecrosis.
From the nervous system: dizziness, photophobia, insomnia, paresthesia, irritability, headache, fatigue, anxiety, tremor, nightmarish dreams, peripheral paralysis (anomaly of perception of pain), increased intracranial pressure, confusion, depression, hallucinations, and other manifestations psychotic reactions (occasionally progressing to conditions in which the patient can do harm to himself), migraine, fainting, thrombosis of the cerebral arteries.
From the sense organs: violation of taste and smell, visual impairment (diplopia, change in color perception), tinnitus, hearing loss.
From the side of the cardiovascular system: tachycardia, violations of the heart rhythm, lowering blood pressure, "tides" of blood to the skin of the face.
From the hematopoietic system: eosinophilia, leukopenia, granulocytopenia, anemia, thrombocytopenia, leukocytosis, thrombocytosis, hemolytic anemia.
Laboratory indicators: hypoprothrombinemia, increased activity of "hepatic" transaminases, hypercreatininemia, hyperbilirubinemia, hyperglycemia, increased activity of alkaline phosphatase and lactate dehydrogenase.
From the urinary system: hematuria, crystalluria (primarily in the case of alkaline urine and low diuresis), acute interstitial nephritis (with possible development of acute renal failure), glomerulonephritis, dysuria, polyuria, urinary retention, albuminuria, urethral bleeding, decreased renal nitrogen function.
Allergic reactions: skin itching, urticaria, the formation of blisters accompanied by bleeding, the appearance of small nodules that form scabs, drug fever,point bleeding on the skin (petechiae), swelling of the face or larynx, dyspnea, vasculitis, erythema nodosum, multiforme exudative erythema, malignant exudative erythema (Stevens-Johnson syndrome), toxic epidermal necrolysis (Lyell's syndrome).
From the side of the musculoskeletal system: arthralgia, arthritis, tendovaginitis, tendon ruptures, myalgia.
Other: increased sweating, photosensitivity, general weakness, superinfections (candidiasis, pseudomembranous colitis).