A client recently began taking feverfew for persistent migraine headaches. What education is most appropriate to teach the client?

A. Has several contraindications: An ideal drug should have minimal contraindications to ensure it can be safely used by most patients. Multiple contraindications increase the risk of adverse reactions and limit the drug’s clinical usefulness.

B. Effective at low doses: High potency and effectiveness at low doses are desirable characteristics of an ideal drug. It allows therapeutic effects to be achieved with minimal drug exposure, reducing toxicity risk and improving patient safety.

C. Only available as an injection: Ideally, a drug should be easy to administer, and oral forms are generally preferred for convenience and patient compliance. Limiting availability to injections reduces accessibility and increases discomfort for patients.

D. Frequent dosing schedule: An ideal drug should have a long duration of action to reduce dosing frequency. Fewer doses improve adherence, convenience, and consistency in maintaining therapeutic drug levels.

A. Drug absorption may be increased in the elderly client: Aging does not lead to increased drug absorption. In fact, gastrointestinal motility and blood flow often decrease with age, which can delay or slightly reduce absorption rather than enhance it.

B. First-pass metabolism may be increased in the elderly client: First-pass metabolism tends to decrease in older adults because of reduced liver mass and hepatic enzyme activity. Increased first-pass metabolism would actually shorten the drug’s effect, not prolong it.

C. Hepatic metabolism may be reduced in the elderly client: Aging commonly results in diminished liver function and decreased hepatic blood flow, slowing the metabolism of drugs like lorazepam. This reduced metabolism causes the medication to remain active in the body longer, leading to prolonged sedation.

D. Lorazepam does not cross the blood-brain barrier: Lorazepam is a benzodiazepine that readily crosses the blood-brain barrier to exert its sedative and anxiolytic effects. Its prolonged action in this scenario is due to reduced metabolism, not limited CNS penetration.