Thyroid hormone is required for the normal functioning of numerous tissues in the body.
Beberapa obat yang sering menyebabkan hipertiroidisme di antaranya adalah lithium untuk pengobatan gangguan bipolar dan amiodarone untuk pengobatan gangguan irama jantung.
Addition of liothyronine should be regarded as experimental, initially only for a trial period of 3 months, and in a set ratio to the current dose of levothyroxine.