A client has been using a metaproterenol metered dose inhaler (MDI) for exercise-induced asthma. Montelukast has been added to the client's therapy. What would be important for the nurse to teach the client about the control of asthma with these medications?
1. Use the metaproterenol when the montelukast does not relieve acute symptoms.
2. The montelukast should be taken on a regular schedule whether there are symptoms or not.
3. At the first sign of wheezing or difficulty breathing, take the montelukast.
4. Use the metaproterenol three times a day, preferably before meals.