Rarely, with prolonged use of the drug.
From the skin: Allergic reactions are possible (skin rash).
From the digestive tract: nausea, vomiting, dyspepsia, exacerbation of gastric ulcer and duodenal ulcer, increased level of hepatic transaminases in blood serum.
From the respiratory system: allergic reactions (rhinitis).
In these cases, the drug should be discontinued.