If multiple medications are prescribed using a metered-dose inhaler, how long should a patient wait between inhalations?

When using a metered-dose inhaler for multiple medications, it is recommended that a patient waits 2-3 minutes between inhalations. This waiting period is important because it allows the first medication to begin working and potentially open the airways before administering a second medication.

This is especially relevant when inhalers prescribed are of a bronchodilator followed by a corticosteroid. The bronchodilator can help reduce airway resistance, allowing for better delivery of the corticosteroid to the lungs. Waiting ensures that the patient receives the optimum benefit from both medications, enhancing overall efficacy, and minimizing potential side effects from using multiple medications in quick succession.

Therefore, the 2-3 minute interval is both practical and beneficial for effective treatment.