Allergic reactions (skin rash, itching, hives, angioedema), nausea, epigastric pain; anemia, thrombocytopenia, agranulocytosis. Increased excitability, dizziness, increased blood pressure, violation of falling asleep.Mydriasis, paresis of accommodation, increased intraocular pressure, dry mouth, nausea, vomiting, epigastric pain; retention of urine.
With prolonged use in large doses - hepatotoxic action, hemolytic or aplastic anemia, methemoglobinemia, pancytopenia; nephrotoxicity (renal colic, glucosuria, interstitial nephritis, papillary necrosis).