A 34-year-old member asked:
might i take 100 mg benadryl (diphenhydramine)?
1 doctor answer • 1 doctor weighed in
Dr. Ronald Krauser answered
Rheumatology 52 years experience
Yes: Yes, that is the maximum dose.
4966 viewsAnswered Sep 19, 2020
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Similar questions
CA
A 35-year-old member asked:
How quickly does Benadryl (diphenhydramine) start to work?
2 doctor answers • 3 doctors weighed in
Dr. Giana Nicoara answered
Allergy and Immunology 28 years experience
About 30 minutes: Lasts in the body for about 4-6 hours and then it needs to be redosed.
6304 viewsReviewed >2 years ago
CA
A 36-year-old member asked:
How much Benadryl (diphenhydramine) is considered too much?
2 doctor answers • 4 doctors weighed in
Dr. Steven Machtinger answered
Allergy and Immunology 44 years experience
1 mg per 2 pounds: For children the correct dose is 1 mg/kg ( a kilogram is 2.2 pounds) every six hours as needed. Adults usually take 25-50 mg per dose. If you or your child need more than that you should consult your physician for advice. There are other drugs that are equally effective but cause less or no sedation and have fewer side-effects than Diphenhydramine (benadryl).
6266 viewsReviewed >2 years ago
CA
A 33-year-old member asked:
Is frequent Benadryl (diphenhydramine) usage dangerous?
2 doctor answers • 4 doctors weighed in
Dr. Michael P Vaughn answered
Allergy and Immunology 34 years experience
No: There is a common misconception that frequent use of antihistamines leads to tolerance and eventual lack of effectiveness. This is untrue. Frequent use of decongestants that can lead to tachyphylaxis (lack of effect after several consecututive days of use) but there is no real justification for changing back and forth from Allegra to Claritin (loratadine) or to zyrtec. Typically if one works poorly, all will.
6352 viewsReviewed >2 years ago
A 37-year-old member asked:
How much Benadryl (diphenhydramine) and beer would knock you out completely?
1 doctor answer • 2 doctors weighed in
Dr. Kevin Nasky answered
Psychiatry 16 years experience
Depends: That depends on several factors: your tolerance to alcohol, your sensitivity to antihistamines, your present level of sleepiness, whether or not you've ingested any stimulants, etc. I assume you're looking to a benadryl/alcohol combination to help you sleep? If so, that is a bad idea. The resulting sleep quality would be terrible, and you'd awaken feeling unrested (or worse!) talk to your doc.
5748 viewsReviewed >2 years ago
A 32-year-old member asked:
How much diphenhydramine do people take to trip?
2 doctor answers • 2 doctors weighed in
Dr. Shalabh Bansal answered
Pediatrics 13 years experience
Toxicity: Every human body reacts to a drug differently. In some children, even one dose of Benadryl (diphenhydramine) will make them very hyper (known as a paradoxical reaction). First and foremost, you should always follow the labeled instructions on all otc medications. If still unsure, speak to your physician.
5742 viewsAnswered >2 years ago
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
Last updated Sep 19, 2020
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