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What are dry powder inhalers (DPIs) and how do they work?

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Dry powder inhalers (DPIs) require you to breathe in quickly and deeply. That can make them hard to use during an asthma attack when you can’t fully catch a deep breath. Read the instructions carefully if you get a different brand, because they vary widely and the new one may not work like your old one.

From: Asthma Inhalers WebMD Medical Reference

SOURCES: National Jewish Medical and Research Center: "Inhaled Medication with a Metered Dose Inhaler (MDI)."  Asthma Society of Canada: "How to Use Your Inhaler." Science Daily: "New Asthma Inhaler Propellant Effective, But Costlier."  American College of Chest Physicians: "Using Your MDI-Closed Mouth Technique, Patient Education Guide."  American Academy of Allergy, Asthma & Immunology (AAAAI): "Cumulative effects of formoterol administered by a dry powder inhaler;" "Inhalers;" and "Anti-inflammatory effects of inhaled steroids delivered by HFA-MDI vs delivery by dry powder inhaler." News release, Merck. Boehringer Ingelheim: "US FDA Expands Approval of Tiotropium Respimat® for Maintenance Treatment of Asthma in Children." FDA. Prescribing Information: Spiriva Respimat.







Reviewed by Carol DerSarkissian on August 6, 2017

SOURCES: National Jewish Medical and Research Center: "Inhaled Medication with a Metered Dose Inhaler (MDI)."  Asthma Society of Canada: "How to Use Your Inhaler." Science Daily: "New Asthma Inhaler Propellant Effective, But Costlier."  American College of Chest Physicians: "Using Your MDI-Closed Mouth Technique, Patient Education Guide."  American Academy of Allergy, Asthma & Immunology (AAAAI): "Cumulative effects of formoterol administered by a dry powder inhaler;" "Inhalers;" and "Anti-inflammatory effects of inhaled steroids delivered by HFA-MDI vs delivery by dry powder inhaler." News release, Merck. Boehringer Ingelheim: "US FDA Expands Approval of Tiotropium Respimat® for Maintenance Treatment of Asthma in Children." FDA. Prescribing Information: Spiriva Respimat.







Reviewed by Carol DerSarkissian on August 6, 2017

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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