[2] Medical therapy for hyperthyroidism typically involves either titrating the dose of carbimazole until the patient becomes euthyroid or maintaining a high dose of carbimazole to suppress endogenous thyroid production, and then replacing thyroid hormone with levothyroxine ("block and replace").

Patients are advised to immediately report symptoms of infection, such as sore throat or fever, so that a full blood count test may be arranged.

However failure to report suggestive symptoms or delays in considering the possibility of immunosuppression and its testing, can lead to fatalities.

However, it more predictably may cause fetal hypothyroidism so (in minimal doses) it can be used in order to control maternal hyperthyroidism.

[5] Furthermore, breast feeding is possible but only if lowest effective dose is used and neonatal development is closely monitored.