6 doctors weighed in:
Does Benadryl (diphenhydramine) allergy work for breathing problems?
6 doctors weighed in

Dr. Paul Carter
Internal Medicine - Allergy & Immunology
2 doctors agree
In brief: Not typically
Benedryl helps by blocking histamine, so it is most useful for allergic problems like runny nose.
It also is an effective sleep aid. It does not help much with asthma despite the fact that asthma is often allergy related. This is because of the inflammatory nature of asthma.

In brief: Not typically
Benedryl helps by blocking histamine, so it is most useful for allergic problems like runny nose.
It also is an effective sleep aid. It does not help much with asthma despite the fact that asthma is often allergy related. This is because of the inflammatory nature of asthma.
Dr. Paul Carter
Dr. Paul Carter
Thank
1 comment
Dr. Matthew Davis
Any improvements in breathing are largely due to reduction of upper airway symptoms that lead to congestion, although it may be of some help to the lower airway (trachea, bronchi, and bronchioles). However, it may have additional benefits for asthma when used for the treatment of insomnia. There is some evidence to suggest that asthma symptoms are worse when a person lacks regular, restful sleep. Breathing obstruction from congested upper airways also causes sleep to be less restorative. If asthma symptoms seem to worsen in a seasonal pattern, are accompanied by congestion, and/or sleep issues are present, Benadryl may be a helpful medication to reduce frequent need of rescue inhalers. Talk to your allergy specialist, sleep specialist, or primary care physician to discuss this as an option.
Dr. Peter Kurzweil
Internal Medicine
2 doctors agree
In brief: NO
Benadry is an antihistamine, that has anti-allergy properties, but also anticholinergic properties that can make you drowsy, can dry secretions, in older males--can cause difficulty urinating due to bladder outlet constriction.
If you are having an anaphylactic reaction, let's say to a bee sting, then the bronchial tubes will constrict and Benadryl (diphenhydramine) can help; but by then u need an epi shot.

In brief: NO
Benadry is an antihistamine, that has anti-allergy properties, but also anticholinergic properties that can make you drowsy, can dry secretions, in older males--can cause difficulty urinating due to bladder outlet constriction.
If you are having an anaphylactic reaction, let's say to a bee sting, then the bronchial tubes will constrict and Benadryl (diphenhydramine) can help; but by then u need an epi shot.
Dr. Peter Kurzweil
Dr. Peter Kurzweil
Thank
Get help from a real doctor now
Dr. Umesh Patel
Board Certified, Internal Medicine - Cardiology
38 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors