|Adverse reactions usually occur in the first eight weeks of treatment. The most frequently occurring reactions are nausea,
headache, arthralgia, mild gastric distress, skin rashes and pruritus. These reactions are usually self-limiting and may not
require withdrawal of the drug. |
Paediatric population Frequency, type and severity of adverse reactions in children appear to be comparable with those in adults.
Blood and lymphatic system disorders Bone marrow depression including neutropenia, eosinophilia and agranulocytosis have been reported. Fatalities with carbimazole induced
agranulocytosis have been reported.
Rare cases of purpura, anaemia, pancytopenia/aplastic anaemia,neutropenia, leucopenia and
isolated thrombocytopenia have also been reported. Additionally, very rare cases of haemolytic anaemia have been reported.
Patients should always be warned about the onset of sore throats, bruising or bleeding, mouth ulcers, fever, and malaise and should be instructed
to stop the drug and to seek medical advice immediately. In such patients, blood cell counts should be performed, particularly where
there is any clinical evidence of infection.
Immune system disorders Angioedema and multi-system hypersensitivity reactions such as cutaneous vasculitis, liver, lung and renal effects occur.
Endocrine disorders Insulin autoimmune syndrome (with pronounced decline in blood glucose level).
Nervous system disorders Headache., neuritis, polyneuropathy.
Vascular Disorders Bleeding.
Gastrointestinal disorders Nausea, mild gastric distress, loss of sense of taste has been observed. Acute salivary gland swelling.
Hepato-biliary disorders Hepatic disorders including abnormal liver function tests, hepatitis, cholestatic hepatitis, cholestatic jaundice and most commonly jaundice, have been reported; in these cases carbimazole should be withdrawn.
Skin and subcutaneous tissue disorders Skin rashes, pruritus, urticaria. Hair loss has been occasionally reported.
Severe cutaneous hypersensitivity reactions have been reported in both adult and paediatric patients, including Stevens-Johnson
syndrome (very rare including isolated reports: severe forms, including generalised dermatitis, have only been described in isolated cases).
Musculoskeletal and connective tissue disorders Isolated cases of myopathy have been reported. Patients experiencing myalgia after the intake of NeoMercazole should have
their creatine phosphokinase levels monitored.
General disorders and administration site conditions Fever, malaise.
Injury, poisoning and procedural complicationsBruising.
Reporting of suspected adverse reactions Reporting of suspected adverse reactions after authorisation of the medicinal product is important. It allows continued
monitoring of the benefit/risk balance of the medicinal product. Healthcare professsionals are asked to report any suspected
adverse reactions via IMB Pharmacovigilance, Earlsfort Terrace, IRL - Dublin 2; Tel: +353 1 6764971; Fax: +353 1 6762517. Website: www.imb.ie; e-mail: firstname.lastname@example.org.