What is levothyroxine and how is it used to treat hypothyroidism in Europe?

Levothyroxine is a synthetic form of thyroxine (T4), prescribed to treat an underactive thyroid (hypothyroidism). In this episode, we explain how it works, how dosing is determined, and how treatment is safely monitored.

In this episode, we cover:

• What hypothyroidism is (insufficient thyroid hormone production)

• Common causes: Hashimoto’s thyroiditis, thyroid surgery, iodine imbalance

• Symptoms: fatigue, weight gain, cold intolerance, constipation, low mood

• How levothyroxine replaces missing thyroid hormone

• Why TSH blood tests guide dosing adjustments

• How to take levothyroxine correctly (timing, food interactions)

• Side effects of over- or under-treatment

• Situations where prescri ...