From the digestive system: glossitis, stomatitis, nausea, vomiting, diarrhea, colitis (including pseudomembranous), itching of the anus; jaundice, a violation of liver function (including increased activity of "liver" transaminases).
From the hematopoiesis: neutropenia, leukopenia, agranulocytosis, thrombocytopenic purpura, aplastic anemia, pancytopenia.
Allergic reactions: angioedema, serum sickness, anaphylactic reactions; rarely - erythema multiforme (reminiscent of Stevens-Johnson syndrome).
From the skin: a rash, urticaria, vaginitis, exfoliative or vesiculo-bullous dermatitis.
From the urinary system: disturbance of kidney function (azotemia, oliguria, proteinuria).
From the sense organs: noise in the ears, vertigo.