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A 41-year-old member asked:

How fast should benadryl (diphenhydramine) work?

1 doctor answer5 doctors weighed in
Dr. Yash Khanna
Family Medicine 58 years experience
15 to 60 minutes: It start working within 15 to 60 minutes of ingestion.

Similar questions

A 35-year-old member asked:

How quickly does Benadryl (diphenhydramine) start to work?

2 doctor answers3 doctors weighed in
Dr. Giana Nicoara
Allergy and Immunology 29 years experience
About 30 minutes: Lasts in the body for about 4-6 hours and then it needs to be redosed.
A 49-year-old member asked:

Would Benadryl (diphenhydramine) work for my mild sa?

1 doctor answer3 doctors weighed in
Dr. Holly Maes
Pediatrics 37 years experience
?sa: I am going to assume "sa" is seasonal allergies. So, yes, Benadryl (diphenhydramine) would work for these, but is certainly not the optimal answer. Benadryl (diphenhydramine) tends to be sedating and also needs to be taken 4 times a day for optimal effect. If you are having to take doses that often to keep symptoms under control, should consider alternative treatment for allergies. If "sa" not allergies, please resubmit question.
Tampa, FL
A 32-year-old male asked:

Does Benadryl (diphenhydramine) work for anxiety?

1 doctor answer2 doctors weighed in
Dr. Robert Sterling
A Verified Doctoranswered
46 years experience
Time For DroolSchool: We here on the ranch call it"Benadrool"because it can shlog you out.So yes sometimes it can work for calming down. But too much turns it into Bena-DryMouthBlurredVisionKnockedOut-Dryl.So just take one capsule(25mg)or at most 50mg. It's not usually prescribed for this.There are other medications specifically for anxiety. But Benadryl (diphenhydramine) is a non-prescription medication and usually safe at proper doses
Tampa, FL
A 32-year-old male asked:

Does Benadryl (diphenhydramine) work for jock itch?

2 doctor answers6 doctors weighed in
Dr. Tanya Russo
Pediatrics 26 years experience
Possibly: Benedryl is an antihistamine which helps itching associated with hypersensitivity reactions such as allergies, bug bites, etc. You may find some transient relief of itching caused by fungal infections, but the ultimate treatment would be that of cure (i.e. topical antifungal cream/powder/spray).
A 16-year-old female asked:

Do Ambien and Benadryl (diphenhydramine) work the same way?

1 doctor answer1 doctor weighed in
Dr. Nicholas Mexas
Internal Medicine 24 years experience
Not at all: Ambien is a prescription only sleep aid which works directly on the brain to reduce electrical activity thereby causing sleep. Benadryl (diphenhydramine) which is used for treatment of allergies causes sleep as a side effect by working on different than Ambien brain receptors called H1. Consult with a physician if you need to take sleep aids on a regular basis.
Last updated Mar 11, 2018
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