Immune system disorders:Uncommon: Hypersensitivity reactions; Very rare: Anaphylactic shock, anaphylactic/anaphylactoid reactions.
Nervous system disorders: Uncommon: Headache.
Ear and labyrinth disorders: Uncommon: Tinnitus.
Cardiac disorders: Uncommon: Tachycardia.
Vascular disorders: Uncommon: Hypotension; Very rare: Hemorrhage.
Respiratory, thoracic and mediastinal disorders: Rare: Dyspnoea, bronchospasm.
Gastrointestinal disorders: Uncommon: Nausea, vomiting, diarrhoea, abdominal pain; Rare: Dyspepsia.
Skin and subcutaneous tissue disorders: Uncommon: Urticaria, rash, angioedema, itching, exanthema.
General disorders and administration site conditions: Uncommon: Fever; Not known: Facial edema.
A decreased blood platelet aggregation in the presence of acetylcysteine has been confirmed by different studies. The clinical relevance has not yet been clarified to date.
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