A nurse in a health care provider’s office is reviewing lab results and notes a phenytoin level was drawn.

Which level would the nurse consider as therapeutic documentation?

Certain foods can interact with medications by inhibiting or inducing cytochrome P450 (CYP) enzymes, which play a crucial role in drug metabolism ¹. This can alter the way the body processes medications and affect their efficacy and safety ¹.
Option A is not correct because not all medications are best absorbed on an empty stomach. Some medications should be taken with food to improve absorption or reduce side effects ¹.
Option B is not correct because client discomfort is not the only concern when it comes to food and medication interactions.
Option C is not correct because foods can also alter the action of medications ¹.

The nurse would expect the provider to order acetaminophen or ibuprofen for the client. Headache, fever, chills, and muscle aches are common side effects of interferon beta-1a ¹⁴. These side effects are often referred to as flu-like symptoms and can be managed with over-the-counter pain relievers such as acetaminophen or ibuprofen ¹.
Option B is incorrect because an evaluation by a physician may not be necessary if the client is experiencing common side effects of interferon beta-1a.
Option C is incorrect because discontinuing the medication immediately may not be necessary if the client is experiencing common side effects of interferon beta-1a.
Option D is incorrect because checking the hemoglobin may not be necessary if the client is experiencing common side effects of interferon beta-1a.