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Doctor insights on: Benadryl For Nausea

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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.

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Dr. John Chiu
1,046 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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Does Benadryl (diphenhydramine) help with nausea and headache?

Does Benadryl (diphenhydramine) help with nausea and headache?

Not usually: Benadryl (diphenhydramine) is fine for allergies, and if seasonal issues trigger headaches, may be of limited benefit. But if you have migraine, will not help, and you are far better to try excedrin migraine or aleve. However, depending on your severity and frequency, you may want to consult your doctor and try to prevent the headaches.

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Took 10mg Vicodin last night around 5pm. Woke up with nausea and took 50mg of Benadryl (diphenhydramine) around 11am next day. Is this okay and safe?

Took 10mg Vicodin last night around 5pm. Woke up with nausea and took 50mg of Benadryl (diphenhydramine) around 11am next day. Is this okay and safe?

Depends: But common side effects of drugs in the opiate class (such as Vicodan) include nausea and drowsiness. It is ok to take Benadryl (diphenhydramine) but whether it helps or not is another issue In the future, be sure to inform your doctor about this experience since you will likely react to other opiates as well with the same symptoms.

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I have a prescription for hydrocodone. If I take Benadryl (diphenhydramine) along with it, will it decrease my chances of nausea?

I have a prescription for hydrocodone. If I take Benadryl (diphenhydramine) along with it, will it decrease my chances of nausea?

No: Benadryl typically only helps with allergy like symptoms. Nausea is best treated with medicines like Phenergan (promethazine) or zofran. You may need to speak with your doctor to discuss these options. Often times changing your pain medicine to another one will resolve your nausea, again speak with your doctor.

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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.

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I just started taking maxzide for hypertension and lexapro. I'm having headache and so nauseous. Would Benadryl (diphenhydramine) be ok to help with the nausea?

I just started taking maxzide for hypertension and lexapro. I'm having headache and so nauseous. Would Benadryl (diphenhydramine) be ok to help with the nausea?

OK but: Benadryl (diphenhydramine) is unlikely to relieve your nausea. If the drugs mentioned were recently introduced, make sure that your symptoms are not just side effects. In order to control the nausea, you will need to know what is causing it. Rx drug is often effective if necessary. If you suffer from migraine, then this is how it shows up.

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I have chills and slight nausea. What medicine should I take- Aleve for the bad fever or Benadryl (diphenhydramine) for the allergy?

I have chills and slight nausea. What medicine should I take- Aleve for the bad fever or Benadryl (diphenhydramine) for the allergy?

Perhaps both: You could take both but you didn't mention any specific allergy symptoms. Nausea could easily be a symptom of infection. And chills are not a symptom of allergy. In that case Benadryl (diphenhydramine) will only make you sleepy. It's not a very good medication for nausea. Take your Ibuprofen and go to bed.

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I had a wheatgrass shot then some carrot juice with banana. I'm having nausea and headache. Could it be an allergic reaction? Should I take Benadryl (diphenhydramine)?

I had a wheatgrass shot then some carrot juice with banana. I'm having nausea and headache. Could it be an allergic reaction? Should I take Benadryl (diphenhydramine)?

Possible: But some wheatgrass are infested with insects or their eggs as well. If you have itching, then allergy is a more likely scenario. If not, it is difficult to tell for sure. Don't touch these products again until after you have talked to your doctor. If you still have the wheatgrass and had tolerated banana and carrot before. Save a sample of the wheat grass in case it needs be examined.

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Why are zofran, ativan and Benadryl (diphenhydramine) the main three drugs used for nausea and vomiting on pediatric oncology?

Why are zofran, ativan and Benadryl (diphenhydramine) the main three drugs used for nausea and vomiting on pediatric oncology?

They work well...: Every patient is different with respect to the best combination of anti-nausea medicines that works for them. We tailor an anti-nausea regimen based on the patient and what chemotherapy they are receiving. There are other medications that can be added to the ones you mentioned, as well as acupressure and acupuncture (applied safely) that can help patients.

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Had lap/choelo. Nextweek severe hives-prednisone&benadryl.3weekpneumonia-doxycycline hyclate&flovent.6days treatmentstill nausea &light headedwhentired?

Had lap/choelo. Nextweek severe hives-prednisone&benadryl.3weekpneumonia-doxycycline hyclate&flovent.6days treatmentstill nausea &light headedwhentired?

Complications: This is too far complicated for an online forum to answer. There are many facets in your story that need to be discussed. You need to see doctors in your area and your surgeon to determine where your symptoms are coming from.

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I might have accidentally od'd on Benadryl (diphenhydramine) yesterday. I took around 325 mg. Nothing really happened except I feel sick and dizzy. What should I do?

I might have accidentally od'd on Benadryl (diphenhydramine) yesterday. I took around 325 mg. Nothing really happened except I feel sick and dizzy. What should I do?

Nothing: This happened yesterday so you are fine. Read instructions and take appropriate dose. Many times an overdose just makes on sleepy.....If you took it on purpose, then tell your parents and get help.

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I had a glass of wine around 8 pm and then at 10 I took benadryl (diphenhydramine). I don't feel sick but im scared to go to sleep. Should I be worried?

I had a glass of wine around 8 pm and then at 10 I took benadryl (diphenhydramine). I don't feel sick but im scared to go to sleep. Should I be worried?

Don't worry: This amount of alcohol and not more than 50 mg Benadryl (diphenhydramine) are not dangerous in the order you took them, but it's never a good idea to mix alcohol and drugs that have sedative effetcts.

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Are anti nausea drugs in the same family as antihistamines? I'm allergic to anti nausea drugs, dr is now saying I'm allergic to antihistamines?

There are: Many different types of anti-nausea medications, but none of them are anti-histamines. I don't know why your doctor is correlating the them. Perhaps he has another reason. Ask him.

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Does Vistaril (hydroxyzine) help for Nausea, similar to bendaryl & Promethazine?

Does Vistaril (hydroxyzine) help for Nausea, similar to bendaryl & Promethazine?

Probably not: It is unlikely that Vistaril (hydroxyzine) would noticeably reduce your nausea. But if you get knocked out by its drowsiness effect, you would not be feeling the nausea as much.

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I am Having some mild test taking anxiety with slight nausea / tummy discomfort, I know that antihistamines are used for motion sickness. Could I try?

I am Having some mild test taking anxiety with slight nausea / tummy discomfort, I know that antihistamines are used for motion sickness. Could I try?

Non-med options: Try learning relaxation techniques, eg. Guided meditation or deep breathing (see YouTube).They lower heart rate & blood pressure, & help with physical & emotional sides of anxiety.Best if practiced regularly. Antihistamines best for anxiety (hydroxyzine is FDA approved, Benadryl (diphenhydramine) =same generation) get into the brain. They unfortunately cut off the "stay awake and alert" signal, not good for exams.

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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.

Benadryl (Definition)

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


Dr. Stephen Noga
1,712 Doctors shared insights

Nausea (Definition)

Nausea = abdominal upset ...Read more