What should the nurse advise a client regarding the potential side effects of levothyroxine?

Levothyroxine is a synthetic form of the thyroid hormone used to treat hypothyroidism. When the hormone levels are insufficient, symptoms may include fatigue, cold intolerance, and weight gain. However, when starting levothyroxine therapy or adjusting the dosage, patients can experience an increase in metabolic rate, which may lead to symptoms such as weight loss and an increased heart rate. Therefore, advising clients to report any weight loss or increased heart rate is essential, as these may indicate that the dosage is too high, leading to hyperthyroid-like symptoms.

This proactive approach helps ensure the proper management of thyroid hormone levels and prevents potential complications associated with overtreatment. Monitoring and reporting these symptoms allow for timely adjustments in medication, ensuring optimal therapeutic outcomes.