This belongs to the group of medicines known as antithyroid drugs.
An overactive thyroid gland produces too much thyroid hormone which causes a condition known as hyperthyroidism.
This can lead to symptoms such as fast or irregular heartbeat, sweating, mood swings, shaking, weight change, weakness, tiredness, intolerance of hot temperatures, worry, menstrual problems. Carbimazole is given as a medicine to correct this hormone imbalance. It may also be used together with other treatments for hyperthyroidism.
Carbimazole is also used in the preparation of patients for thyroidectomy (part or total removal of the thyroid gland) and before radioiodine treatment.
Carbimazole is available in tablet form.
It is also sometimes known as: Neo-Mercazole. You may notice the use of any of these names on the packaging of your medicine.
Before Taking Carbimazole
Before taking carbimazole make sure your doctor or pharmacist knows:
How to Take Carbimazole
Getting the most from your treatment
Can Carbimazole cause problems?
Along with their useful effects, all medicines can cause unwanted symptoms which usually improve as your body adjusts to the new medicine. Speak with your doctor if any of the following symptoms continue or become troublesome.
Feeling sick, headache, upset tummy, skin rash, itching, joint pain, jaundice (yellowing of the skin and whites of the eyes) and occasionally muscle pain, hair loss.
IMPORTANT: Contact your doctor immediately if you develop an infection, a sore throat, mouth ulcers, a high temperature, unusual bruising or bleeding, or a general feeling of being unwell.
If you experience any other worrying symptoms which you think may be due to this medicine, discuss them with your doctor or pharmacist.
How to store Carbimazole
Iodine or iodine excess may decrease the effect of Carbimazole, and an iodine deficiency can increase the effect
Serum concentration of digoxin and digitoxin may increase when patients take antithyroid agents. A decrease of the
dosage may be necessary when patient becomes euthyroid.
Antithyroid agents may decrease thyroidal uptake of sodium iodide I131, a rebound in uptake may occur up to 5 days
after sudden withdrawal of Carbimazole.
Patients response to oral anticoagulants may be affected by his/her thyroid and metabolic status. An evaluation of prothrombin
time and an adjustment of anticoagulant dosage are recommended
Carbimazole is contraindicated in patients who are hypersensitive to Carbimazole or other thiourea anththyroid agents.