- hypersensitivity to the components of the drug;
- erosive and ulcerative lesions of the gastrointestinal tract (in the phase of exacerbation);
- gastrointestinal bleeding (including anamnesis);
- complete or incomplete combination of bronchial asthma, recurrent nasal polyposis and paranasal sinuses and intolerance to acetylsalicylic acid or non-steroidal anti-inflammatory drugs (including in anamnesis);
- severe violations of the liver and / or kidney function;
- hemorrhagic diathesis, hypocoagulation, hemophilia, hypoprothrombinemia;
- pregnancy (I and III trimesters);
- the period of breastfeeding;
- surgical interventions, accompanied by heavy bleeding; ,
- deficiency of glucose-6-phosphate dehydrogenase;
- glaucoma;
- severe arterial hypertension;
- portal hypertension;
- severe course of ischemic heart disease;
- avitaminosis K;
- children under 15 years of age (risk of developing Reye's syndrome in children with hyperthermia in the presence of a viral disease);
increased excitability, sleep disturbance.