A client diagnosed with hypothyroidism is taking a thyroid replacement. Prior to discharge from the hospital, the nurse instructs the client to report to the physician any side effects of the drug,...

A client diagnosed with hypothyroidism is taking a thyroid replacement. Prior to discharge from the hospital, the nurse instructs the client to report to the physician any side effects of the drug, including chest pain, insomnia, and hyperactivity. What is the best explanation for the nurse’s instruction?

1. The side effects indicate that the dosage is too low and needs to be increased.

2. The side effects determine whether the medication should be changed.

3. The side effects of thyroid replacement often mimic those of hyperthyroidism.

4. The side effects indicate that an adverse drug reaction is occurring.