Skin: Skin rash and allergies, Hives

Immune system disorders: Anaphylactic reaction, Drug allergic reaction

Digestive tract: Nausea and vomiting, Diarrhoea, Stomach and mouth ulceration

Respiratory tract: Coughing, Chest tightness or pain, Whistling sound while taking breath, Respiratory arrest

Hematological: Low platelet count, Abnormal prothrombin time

Liver: Abnormal liver function test results

Heart: Cardiac arrest, ECG abnormalities

Musculoskeletal: Joint pain

Miscellaneous: Fever, Malaise, Facial or eye pain, Faint, Low blood pressure, Blurred vision, Anxiety, Seizures, Low level of potassium

Drug Overdose

There is a risk of hepatic encephalopathy. Over dosage with acetylcysteine has shown the effects similar to the anaphylactoid reactions and other side effects listed above, but they may be severe. In such instances, general supportive steps should be carried out. Reactions are managed with antihistamines and steroids.There is no specific antidote.