From the gastrointestinal tract; change in taste, nausea, vomiting, diarrhea, dysbiosis, stomatitis, glossitis; in some cases - a moderate increase in the activity of "liver" transaminases, cholestatic jaundice, hepatic cholestasis, acute cytolytic hepatitis; pseudomembranous and hemorrhagic colitis.
From the side of the urinary system: development of interstitial nephritis.
From the hemopoietic system; leukopenia, neutropenia, thrombocytopenic purpura, eosinophilia, agranulocytosis, neutropenia, thrombocytopenia, hemolytic anemia.
From the nervous system: excitement, anxiety, insomnia, ataxia,confusion, behavior change, depression, peripheral neuropathy, headache, dizziness, epileptic seizures.
Allergic reactions: skin reactions, mainly in the form of a specific maculopapular rash, hives, skin hyperemia, erythematous rashes, rhinitis, conjunctivitis; multiforme exudative erythema (Stevens-Johnson syndrome), fever, arthralgia, eosinophilia, exfoliative dermatitis, reactions similar to serum sickness; toxic epidermal necrolysis, allergic vasculitis, acute generalized exanthematous pustules; in some cases - anaphylactic shock, angioedema.
Other: shortness of breath, tachycardia, interstitial nephritis, vaginal candidiasis, superinfection (especially in patients with chronic diseases or reduced resistance of the body), crystalluria.