Most of the spray generated by the majority of metered-dose inhalers consists of which of the following?

Question

Quizplus · Accepted Answer

The majority of metered-dose inhalers contain a propellant that helps to deliver the active drug into the lungs. The propellant is usually a halocarbon or hydrofluoroalkane that evaporates quickly, taking the drug particles with it. This allows the drug to be dispersed evenly and deeply into the lungs. While some inhalers may contain surfactant agents, water solutions, or other ingredients, these are typically present in much smaller amounts compared to the propellant.

Most of the Spray Generated by the Majority of Metered-Dose