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Doctor insights on: Benadryl Hangover

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How much Benadryl (diphenhydramine) is considered too much?

How much Benadryl (diphenhydramine) is considered too much?

Benadryl (diphenhydramine): Either the recommended amount based on weight through the directions on the box or following your doctors recommendations if the recommended dose they made is higher. ...Read more

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Benadryl (Definition)

Diphenhydramine is a sedating antihistamine which is a kind of antihistamine type drug (common ...Read more


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Why is it that Benadryl (diphenhydramine) gives me a hangover?

Crosses into brain: There is a blood:brain barrier and medications can cross through this barrier to cause people to feel "hungover". People complain of feeling drowsy or paradoxically some people get insomnia. Non-sedating antihistamines (fexofenadine, loratidine, cetirizine) have less of this "crossover" and so cause less problems for people. ...Read more

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Husband has bad allergies. Congested, runny nose. Claritin doesn't help, zyrtec makes him dizzy, Benadryl (diphenhydramine) makes him hungover. What else will help?

Husband has bad allergies. Congested, runny nose. Claritin doesn't help, zyrtec makes him dizzy, Benadryl (diphenhydramine) makes him hungover. What else will help?

Seasonal allergies: Treatment of allergic rhinitis will be based on the severity of the symptoms. Intra nasal steroids ( like Flonase or nasonex) would be considered in the treatment. You can also try allegra. In severe cases we might start oral steroids. ...Read more

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What is Benadryl (diphenhydramine) used for?

See below: Benadryl (diphenhydramine) is an antihistamine. It is normally used to help with allergy symptoms, sneezing, and runny nose. It can also help with itchy rashes. Also, it is occasionally used for motion sickness. ...Read more

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How should a person feel if the snorted 50 mgs of benadryl (diphenhydramine)?

Bad idea: The snorting of medicines that are not supposed to be administered intranasally is usually going to lead to catastrophic effects. The consequences of administering Benadryl (diphenhydramine) in an inappropriate manner could be delirium and hallucinations. You could also turn psychotic and accidentally hurt yourself or someone else. ...Read more

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Is it safe to take 4 benadryl, 50 mg?

Is it safe to take 4  benadryl, 50 mg?

Not good idea: This will not kill you but will likely make you very drowsy, thirsty (dry mouth), and/or constipated. It may also lead to rapid heart beats. Why do you feel that you need that many? ...Read more

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Side effects of benadryl (diphenhydramine)?

Dried up and sleepy: Why would you want to take benadry (the brand name for diphenhydramine) long term? Fagetaboutit. Side effects are drying of mucous membrane, drowsiness, fatigue, difficulty urinating... ...Read more

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Is Benadryl (diphenhydramine) good for sinus?

Is Benadryl (diphenhydramine) good for sinus?

Only in the: Sense that it could help dry up secretions, or decrease an allergic component of nasal congestion. ...Read more

Dr. John Chiu
1,011 doctors shared insights

Diphenhydramine (Definition)

Diphenhydramine is a sedating antihistamine which is a kind of antihistamine type drug (common ...Read more


Hangover (Definition)

There is no official definition. Usually, people ...Read more