When asking about drugs, which elements should you inquire about?

• A. Route, substance, frequency, amount, and last use
• B. Route, duration of use, brand, and color of the substance
• C. Brand name, color, dose, and last use
• D. Route, substance, how long ago, and side effects

Answer: (A)

Gauging drug-use history hinges on collecting five essential details: what substance is used, how it was taken (route), how often it’s used (frequency), how much is used (amount), and when the last use occurred. This set of information directly shapes how you interpret the patient’s current state and plan care. Knowing the substance identifies the pharmacology you’re dealing with; the route tells you how quickly effects occur and how bioavailability may differ; frequency and amount reveal exposure level, potential tolerance, and risk of dependence or withdrawal; and the timing of the last use is crucial for assessing whether the patient is acutely intoxicated, in withdrawal, or somewhere in between, which influences vital signs, mental status, and medication decisions. Details like brand name or color are unreliable for predicting effects, and while knowing how long the patient has used the substance can be helpful, it doesn’t replace the precision of frequency, amount, and last use. Side effects are important to explore later, but they don’t define the immediate exposure state as directly as the five core elements do.