Hypersensitivity to the active substance or to any of the excipients listed in Description.
Patients with active peptic ulcer.
Because of a possible interference of the product metabolites with methionine metabolism, ERDOMED is contraindicated in patients suffering from hepatic cirrhosis and deficiency of the cystathionine-synthetase enzyme.
Since there are no data in patients with renal failure with creatinine clearance < 25 ml/min or with severe liver failure, the use of erdosteine is not recommended in these patients.
The drug is contraindicated in children younger than 2 years (oral forms).