An older adult with iron deficiency anemia is being discharged with a prescription for ferrous sulfate enteric-coated tablets. To promote the best absorption of the medication, which information should the nurse include in the discharge instructions?

Levothyroxine is a thyroid hormone replacement medication used to treat hypothyroidism. To ensure proper absorption and effectiveness of the medication, it should be taken on an empty stomach, preferably in the morning, and at least 30 minutes before eating. Therefore, when the client indicates that they understand the need to take the medication on an empty stomach, it indicates that the education was effective.

Option b, "Avoid the use of iron supplements," is also important education for clients taking levothyroxine because iron supplements can interfere with the absorption of the medication. However, it is not the best indicator of effective education because the question asks for the statement that indicates education was effective, and option a is a more direct and specific response to the medication.

Option c, "Administer levothyroxine at bedtime," is not accurate information because the medication should be taken in the morning on an empty stomach.

Option d, "Consume foods that are high in iodine," is not recommended for clients taking levothyroxine because high amounts of iodine can interfere with thyroid function. Therefore, this statement indicates a need for further education.

Sumatriptan succinate is a medication used to treat migraine headaches by narrowing blood vessels in the brain. It is important to determine if the client has a history of coronary artery disease before administering the initial dose because the medication can also cause narrowing of the coronary arteries and potentially lead to a heart attack or other cardiac events.

Type 2 diabetes mellitus (a), seasonal allergic rhinitis (c), and irritable bowel syndrome (d) are not directly related to the use of sumatriptan succinate. However, it is still important to consider the client's medical history and overall health status when prescribing or administering any medication.