Which statement about multiple-dose inhalers is correct?

Which statement about multiple-dose inhalers is correct?

• A. They are always used with a jet nebulizer
• B. They are preloaded with a quantity of drug sufficient for dispensing many doses
• C. They dispense a single dose from a punctured capsule
• D. They require refrigeration

Answer: (B)

Multiple-dose inhalers are designed to deliver a set amount of medication with each puff from a single canister that contains enough drug for many actuations. This design lets the patient use the device repeatedly until the supply is exhausted, rather than needing a new container for every dose. They don’t require a jet nebulizer to produce the aerosol—the inhaler itself releases the dose when you actuate it and inhale. A capsule-based inhaler, where a punctured capsule releases a single dose, is a single-dose design, not a multiple-dose one. Refrigeration isn’t typically required for standard inhalers since they’re formulated to be stable at room temperature, though some medicines may have different storage needs.

Multiple-dose inhalers are designed to deliver a set amount of medication with each puff from a single canister that contains enough drug for many actuations. This design lets the patient use the device repeatedly until the supply is exhausted, rather than needing a new container for every dose. They don’t require a jet nebulizer to produce the aerosol—the inhaler itself releases the dose when you actuate it and inhale. A capsule-based inhaler, where a punctured capsule releases a single dose, is a single-dose design, not a multiple-dose one. Refrigeration isn’t typically required for standard inhalers since they’re formulated to be stable at room temperature, though some medicines may have different storage needs.