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Doctor insights on: When To Take Benadryl

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Dr. John Chiu
1,058 doctors shared insights

Diphenhydramine (Definition)

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


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If I get severe irritability when I take benadryl (diphenhydramine) is it still ok to take occasionally when having an allergic reaction? Safe to take?

If I get severe irritability when I take benadryl (diphenhydramine) is it still ok to take occasionally when having an allergic reaction? Safe to take?

Appears safe.: If irritability is your only side effect it is apparently not a physical threat. Are you able to tolerate the irritability without threatening your livelihood, family, or significant relationships? There are other antihistamines. ...Read more

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When i take Benadryl (diphenhydramine) after after a night of drinking I have no nausea the next morning. Is this just a placebo effect or actually therapeutic?

When i take Benadryl (diphenhydramine) after after a night of drinking I have no nausea the next morning. Is this just a placebo effect or actually therapeutic?

Not studied: Unaware of any study supporting your experience. However if this worked for you, who am i to question? The only thing i can think of is that since Benadryl (diphenhydramine) makes you drowsy, you might have drunk less because of it. ...Read more

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When i take a Benadryl (diphenhydramine) at night before i go to bed why do I always wake up with a horrific headache that lasts for about 45 min?

When i take a Benadryl (diphenhydramine) at night before i go to bed why do I always wake up with a horrific headache that lasts for about 45 min?

Known side effect: Benadryl (diphenhydramine) can cause headache in certain patients (mechanism unknown). If you are taking Benadryl (diphenhydramine) at night to help you get to sleep, I have had many patients do well taking melatonin (3 mg - over the counter) instead. ...Read more

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What happens when you take aspirin, benadryl, (diphenhydramine) sudafed and Mucinex all at the same time?

What happens when you take aspirin, benadryl, (diphenhydramine) sudafed and Mucinex all at the same time?

Nothing serious: Nothing serious iat 31 yrs age if there is no asthma or ulcer.Just dryness or fatigue can occur. ...Read more

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I took NyQuil but i still have nasal congestion it hurts when I cough could I take Benadryl (diphenhydramine) or what do you recommend?

I took NyQuil but i still have nasal congestion it hurts when I cough could I take Benadryl (diphenhydramine) or what do you recommend?

See your Physician: You may need more treatment than OTC meds or at least be checked to see what is right for you. So see your health care provider. ...Read more

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Can I take benzonotate with Benadryl?

Yes: There is no interaction between these medications. Take them as directed. ...Read more

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How long does it take for benadryl to take effect?

How long does it take for benadryl to take effect?

Some variables here: IV is faster than oral, but what dose and for what indication (sleep, rash, allergy, etc.) are you questioning please. ...Read more

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Can I take Benadryl (diphenhydramine) and virtussin?

No: Combination isn't advisable, benadryl (diphenhydramine) may increase CNS depressive effects of virtussin, better see your doctor if the cough is really bothersome, good luck ...Read more

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Can I take 4 benadryl (diphenhydramine) at one time?

Not recommended: that is above the usual dose and will likely produce significant sleepiness. Even one might be a problem with driving. Furthermore, it is very unlikely to produce more benefit than the recommended dose (1, at most 2). ...Read more

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Can you take Benadryl (diphenhydramine) every night ?

Can you take Benadryl (diphenhydramine) every night ?

No: Very poor sleep medication with possible side effects if you are taking it to sleep. I hope this helps. If you want to talk more about this schedule a virtual appointment with Dr. Yetimyan at www.healthtap.com/dryetimyan ...Read more

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Can adults take children's Benadryl (diphenhydramine)?

Can adults take children's Benadryl (diphenhydramine)?

Sure: Plain Children's Benadryl and plain Adult's Benadryl have the same diphenhydramine ingredient. One just has to decide how many milligrams to take (such as 25mg or 50mg), and then she can figure out how many tablets, capsules, or milliliters of the Children's or of the Adult's formulation to take. If one takes the same number of milligrams, it should not matter which formulation is taken. ...Read more

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Had some drimks can I take benadryl (diphenhydramine)?

What is the question: Are you asking if you can drink while taking benadryl (diphenhydramine).You have to be careful as it will cause increased drowsiness and ataxia.If you drink excessive it can be dangerous.But i will definitely recommend avoid if you can and never drive if you mix these two. ...Read more

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How much benadryl (diphenhydramine) can you take at one?

How much benadryl (diphenhydramine) can you take at one?

Benadryl (diphenhydramine): mind you, you're already on other medications as mentioned in your profile, valium (diazepam) can interact with diphenhydramine (benadryl) and cause CNS depression or psychomotor impairment, be careful with multiple medications, read the labels well on OTC medicines ...Read more

Benadryl (Definition)

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