Indications |
Oral Hyperthyroidism, Adjunct to radio-iodine therapy, Grave's disease, Preparation for thyroidectomy Adult: Initially, 20-60 mg daily as a single or divided dose, reduced gradually once euthyroidism is achieved. Maintenance: 5-15 mg daily for at least 1 yr or 18 mth. Child: 4-12 yr: Initially, 15 mg daily. |
Contraindications |
Hyperthyroidism due to nodular goitre. |
Warnings / Precautions |
Liver diseases, pregnancy, lactation. |
Adverse Reactions |
Mild leucopaenia, sore throat, mouth ulcers, fever, bruising, malaise; rarely cholestatic jaundice; nephrotic syndrome. Nausea, loss of taste, headache, arthralgia, alopoecia. Potentially Fatal: Agranulocytosis, aplastic anaemia, hypoprothrombinaemia, neutropaenia; hypothyroidism and goitre. |
Drug Interactions |
Potentially Fatal: Increased sensitivity to warfarin in hyperthyroidism and careful control required as patient is rendered euthyroid. See Below for More carbimazole Drug Interactions |
Mechanism of Actions |
Carbimazole is metabolised to methimazole which is responsible for its antithyroid action. It blocks the production of thyroid hormones by inhibiting thyroid peroxidase. Absorption: Rapid from the GIT (oral); peak plasma concentrations after 1-2 hrs. Distribution: High concentrations in the thyroid gland; crosses the placenta; enters breast milk. Metabolism: Hepatic; converted to methimazole. Excretion: Urine (<12% unchanged drug); 3-6 hrs (elimination half-life). |
Administration |
May be taken with or without food. (Take consistently w/ or w/o meals.) |
Storage Conditions |
Oral: Store below 25°C. |
ATC Classification |
H03BB01 - carbimazole ; Belongs to the class of sulfur-containing imidazole derivative agents. Used in the management of thyroid diseases. |
Storage |
Oral: Store below 25°C. |
Available As |
|
Carbimazole
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Carbimazole Containing Brands
Carbimazole is used in following diseases
Drug - Drug Interactions of Carbimazole
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