Which statement about multiple-dose versus unit-dose inhalers is true?

Which statement about multiple-dose versus unit-dose inhalers is true?

• A. They deliver a single dose per activation
• B. They deliver more than one dose per activation
• C. They deliver no doses
• D. They require refrigeration

Answer: (B)

The idea being tested is how these devices release medication. A multiple-dose inhaler is designed so that one activation can release more than one unit dose of drug, because it contains a reservoir of doses. A unit-dose inhaler, in contrast, is designed so that each activation delivers exactly one unit dose. So the true statement is that multiple-dose inhalers deliver more than one dose per activation. Refrigeration isn’t a defining feature of inhalers, and most inhalers don’t require it.

The idea being tested is how these devices release medication. A multiple-dose inhaler is designed so that one activation can release more than one unit dose of drug, because it contains a reservoir of doses. A unit-dose inhaler, in contrast, is designed so that each activation delivers exactly one unit dose. So the true statement is that multiple-dose inhalers deliver more than one dose per activation. Refrigeration isn’t a defining feature of inhalers, and most inhalers don’t require it.