No, Dulera is not a rescue inhaler. It is a maintenance inhaler designed for daily use to prevent asthma symptoms, not to relieve them once they start. If you’re having an asthma attack, Dulera will not work fast enough to help, and you need a separate rescue inhaler like albuterol on hand.
Understanding the difference matters because reaching for the wrong inhaler during an asthma flare-up can be dangerous. Here’s what Dulera actually does, how it differs from a rescue inhaler, and how to use it correctly.
What Dulera Does
Dulera is a combination inhaler containing two active ingredients that work together. The first is mometasone furoate, an inhaled corticosteroid that reduces inflammation in your airways over time. The second is formoterol, a long-acting bronchodilator that relaxes the muscles around your airways for about 12 hours per dose.
Neither ingredient is designed to open your airways in seconds during an emergency. The corticosteroid component builds up gradually, reducing the chronic swelling that makes your airways reactive in the first place. The bronchodilator component keeps airways open on a sustained basis throughout the day, but its job is prevention, not rescue. Together, these two drugs lower your risk of asthma attacks and reduce how often you need a rescue inhaler.
How Rescue Inhalers Are Different
Rescue inhalers contain short-acting bronchodilators, most commonly albuterol. These medications work within minutes, rapidly opening constricted airways during an asthma attack or sudden breathing difficulty. Their effects last only a few hours, which is why they aren’t useful for long-term control.
The key distinction is speed. A rescue inhaler is reactive: you grab it when symptoms hit. A maintenance inhaler like Dulera is proactive: you use it on a fixed schedule every day, whether you feel symptoms or not, to keep attacks from happening. Skipping Dulera because you “feel fine” defeats the purpose, since the anti-inflammatory effects depend on consistent use.
Why You Can’t Substitute Dulera in an Emergency
You might notice that Dulera contains formoterol, which is technically a bronchodilator. This leads some people to wonder if it could double as a rescue inhaler in a pinch. It cannot. Formoterol in Dulera is paired with a corticosteroid and dosed on a twice-daily schedule specifically for maintenance therapy. The FDA labeling does not approve Dulera for acute symptom relief.
Some asthma treatment protocols do allow certain inhaler combinations containing formoterol to be used as both a daily controller and a reliever. This approach, sometimes called SMART (Single Maintenance and Reliever Therapy), has been studied with budesonide-formoterol combinations. However, there is insufficient data to confirm that mometasone-formoterol (Dulera’s specific combination) is safe or effective when used this way. Current guidelines advise against assuming results from one formoterol combination apply to another.
In short, even though Dulera contains a bronchodilator ingredient, it is not interchangeable with a rescue inhaler. You should always have a separate short-acting rescue inhaler prescribed alongside Dulera.
How to Use Dulera Correctly
Dulera is taken as two puffs twice a day, once in the morning and once in the evening. This schedule stays the same regardless of how you feel on a given day. It’s approved for adults and adolescents 12 and older in two strengths (100/5 mcg and 200/5 mcg) and for children ages 5 to 11 in a lower strength (50/5 mcg).
After each use, rinse your mouth with water and spit it out. The corticosteroid component can suppress immune defenses in your mouth and throat, which creates a favorable environment for a yeast infection called oral thrush. Rinsing takes about 10 seconds and significantly reduces that risk.
Common Side Effects
The most frequently reported side effects in clinical trials were nasopharyngitis (a stuffy or runny nose similar to a common cold), sinus inflammation, and headache. These occurred in at least 3% of patients and were more common than in people taking a placebo. Most people tolerate Dulera well when using it as directed, and side effects tend to be mild.
Keeping Both Inhalers Straight
If you’ve been prescribed Dulera, your treatment plan almost certainly includes a rescue inhaler too. A practical way to keep them straight: Dulera goes with your morning and evening routine, like brushing your teeth. Your rescue inhaler goes wherever you go, in a bag, a pocket, or a desk drawer, ready for unexpected symptoms. If you find yourself reaching for your rescue inhaler more than a couple of times per week, that’s a signal your asthma isn’t well controlled and your maintenance plan may need adjusting.