From the digestive system: abdominal pain, dyspepsia (nausea, vomiting, heartburn, flatulence, decreased appetite, diarrhea), stomatitis, impaired liver function, change in taste. With prolonged use in large doses - ulceration of the mucous membrane of the gastrointestinal tract, gingival, gastrointestinal, hemorrhoidal bleeding.
From the nervous system: headache, dizziness, insomnia, agitation, nervousness, drowsiness, depression, asthenia, confusion or loss of consciousness, memory impairment, migraine, peripheral neuropathy.
From the sense organs: noise or ringing in the ears, blurred vision, conjunctivitis, mucous membranes dry eyes, eye pain, conjunctival hyperemia, hearing loss, vertigo.
From the side of the cardiovascular system: increased blood pressure, tachycardia.
From the hematopoiesis: agranulocytosis, anemia, hemolytic anemia, thrombocytopenia, and leukopenia.
From the urinary system: edematous syndrome, cystitis, urethritis, renal dysfunction, interstitial nephritis, nephrotic syndrome, hematuria.
Allergic reactions: skin rash (incl.erythematous, urticaria), skin itching, rhinitis, angioedema, bronchospasm, exfoliative dermatitis, anaphylactic shock.
Other: increased sweating, hemoptysis, epistaxis, myalgia, muscle twitching, shortness of breath, thirst, photosensitivity, with prolonged use in large doses - vaginal bleeding.