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Doctor insights on: Benadryl Allergy In Children

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Dr. John Chiu
2,630 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


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Can you take Benadryl allergy with Mucinex Cold, Flu, & Sore Throat? Think I have a sinus infection.

Can you take Benadryl allergy with Mucinex Cold, Flu, & Sore Throat? Think I have a sinus infection.

Yes you can: but don't exceed recommended dose for either and read the labels carefully. Good that you asked, always exercise caution with multiple medications. If this combination doesn't work, you may need to see your doctor for assessment and possibly prescription medications, best wishes ...Read more

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Is it possible that i give my two-year-old children's Benadryl (diphenhydramine) for seasonal allergies?

Is it possible that i give my two-year-old children's Benadryl (diphenhydramine) for seasonal allergies?

Yes: Yes, you can give your 2 year old child Benadryl (diphenhydramine) for allergy symptoms. Its onset is fast within 15-60 minutes and it lasts for about 4-6 hours. Otc zyrtec's onset is also fast and it lasts for 24 hours. Keep in mind that those medications can control mild allergy symptoms. If your child still suffers from the disease after taking otc meds, you might want to bring him or her to see an allergist. ...Read more

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Took 2tsp of children's Benadryl (diphenhydramine) for my allergies, but forgot that i had 3 glasses of 5% dessert wine 3 hours earlier. Should i worry?

Took 2tsp of children's Benadryl (diphenhydramine) for my allergies, but forgot that i had 3 glasses of 5% dessert wine 3 hours earlier. Should i worry?

Not necesarily: I wouldn't drive a car or operate tools or machinery for another 6-8 hours, but this exposure would just make someone groggy. The time needed to metabolize the alcohol suggests at least half was gone before the medicine was taken, and the overlap is not worrisome. ...Read more

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My husband and i accidentally gave our 4 yr old son, who weighs 42lbs, a double dose of childrens benadryl (diphenhydramine) for his allergies (chewable tablets 12.5mg)?

My husband and i accidentally gave our 4 yr old son, who weighs 42lbs, a double dose of childrens benadryl (diphenhydramine) for his allergies (chewable tablets 12.5mg)?

??no numbers??: The only way for me to comment on the dose is if you list what you gave. Two 12.5 mg tabs in a 42 lb kid might make him groggy but shouldn't hurt in the long run.Four tabs would put him to sleep and he'd be out for a few hours. Luckily the med clears the body in 4-8 hours. ...Read more

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Is it okay to give 10 mL Of Children's mucinex with 10 mL of Benadryl (diphenhydramine) Allergy Plus to a 12 year old?

Is it okay to give 10 mL Of Children's mucinex with 10 mL of Benadryl (diphenhydramine) Allergy Plus to a 12 year old?

Yes: But benadryl (diphenhydramine) might make a child dopey or drowsy or overactive. It would not be my choice. You neglect to detail the symptoms. Best approach can be determined by knowledge of the details. ...Read more

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Is it safe to give my 16 month old(who weighs 19lbs) children's Claritin instead of Benadryl (diphenhydramine) for allergies?

Is it safe to give my 16 month old(who weighs 19lbs) children's Claritin instead of Benadryl (diphenhydramine) for allergies?

Not approved : 16 months is a young age and not many medications are approved for allergies. The best thing to do is to call pediatrician as each child is different in needs and peds knows the kid best. ...Read more

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Is it ok to give my 5 year old children's benadryl and childrens mucinex cough? She has bad allergies which makes her cough mostly at night.

Is it ok to give my 5 year old children's benadryl and childrens mucinex cough? She has bad allergies which makes her cough mostly at night.

MGT: I would not advise giving these medications to your child based on the information provided.
I would suggest an over the counter anti histamine such as Claritin instead which is less sedating.
The underlying cause of her nighttime cough should be further evaluated by her PCP. Does she have a history of asthma? Is there smoke exposure? ...Read more

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I read on st louis children's hospital website you can give child 20-24 lbs (under 1 yr) 3/4 tsp Benadryl (diphenhydramine) for nasal allergies. Is that true?

I read on st louis children's hospital website you can give child 20-24 lbs (under 1 yr) 3/4 tsp Benadryl (diphenhydramine) for nasal allergies. Is that true?

Benadryl (diphenhydramine): While the recommended dose of Benadryl (diphenhydramine) it is often difficult to distinguish between is 3/4 tsp and one teaspoon. Therefore it is important to use a calibrated or measuring spoon for accurate dosing. ...Read more

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My 8 year old son is having seasonal allergies. I am giving him childrens Claritin but was wondering if he can also have childrens Benadryl (diphenhydramine) ?

My 8 year old son is having seasonal allergies. I am giving him childrens Claritin but was wondering if he can also have childrens Benadryl (diphenhydramine) ?

Other better options: Even certain "non-sedating" antihistamines like zyrtec have been found to impair short term memory and have negative effects on school performance. Rather than increase the likelihood of your 8 year old son having side effects, consider adding a topical nasal steroid spray like Flonase or a complimentary medication like singulair (montelukast). Alternatively, consider allergy testing to identify the triggers. ...Read more

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6 mo old son has bad allergies, his doctor said to use Benadryl (diphenhydramine) but on the bottle it literally says "do not use in children under 2" idk who to trust?

6 mo old son has bad allergies, his doctor said to use Benadryl (diphenhydramine) but on the bottle it literally says "do not use in children under 2" idk who to trust?

Trust doctor: The manufacturer buts the warning on so parents do not use it unless directed by a doctor who will adjust the dosage for the age and size of the child. ...Read more

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What is the correct dosage for children's Benadryl (diphenhydramine) allergy for 19 month toddler 21.5 lbs? Is it ok to use Benadryl (diphenhydramine) with alubeterol/prednisone inhalant

What is the correct dosage for children's Benadryl (diphenhydramine) allergy for 19 month toddler 21.5 lbs? Is it ok to use Benadryl (diphenhydramine) with alubeterol/prednisone inhalant

1 teaspoon or 5cc's: Benadryl (diphenhydramine) can be used with the Albuterol and Prednisone. The dosage of Benadryl (diphenhydramine) for your child's weight would be about 1 teaspoon (5cc) being that the concentration of the Benadryl (diphenhydramine) is 12.5mg per each teaspoon. Remember, if your child is having breathing problems, always consult with your Pediatrician. Take care. ...Read more

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How many ml's of childrens Benadryl (diphenhydramine) can I give my 4yr old 36lb son. Severe nasal congestion, watery eyes , and cough. Also has allergies ?

How many ml's of childrens Benadryl (diphenhydramine) can I give my 4yr old 36lb son. Severe nasal congestion, watery eyes , and cough. Also has allergies ?

Liquid benedryl: The general dosing of this in the common liquid form (12.5mg/5ml) is 1 tsp/25 lb.This would be about a teaspoon & a half in the child listed above. This can be repeated every 4 hours as needed. ...Read more

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My LO is 8 mo. 20 lbs. I gave her infant Tylenol (acetaminophen). She has a thick runny nose and watery eyes (allergies) can I also give her children's benadryl?

My LO is 8 mo. 20 lbs. I gave her infant Tylenol (acetaminophen).  She has a thick runny nose and watery eyes (allergies) can I also give her children's benadryl?

Benedryl indication: Although the manufacturer does not indicate it's use in children under 2 years of age, it is not uncommon for it to be recommended 'off label' by pediatricians. Oral cetrizine is another antihistamine for allergies which does have a documented age indication for 6 months and up. Both of these medications can be safely administered with Tylenol (acetaminophen). ...Read more

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My ten year old has seasonal allergies for the first time. I gave her 24 hr Claritin (loratadine) at 7:30 am. It's 9pm. Can I give her children's diphenhydramine?

My ten year old has seasonal allergies for the first time. I gave her 24 hr Claritin (loratadine) at 7:30 am. It's 9pm. Can I give her children's diphenhydramine?

Okay: This is fine for short or longer term treatment. You might consider some of the newly made OTC nasal sprays with a low dose steroid (Nasocort,Rhinocort,etc.)I find many young women don't like the sprays, but if they will give them a week or two the allergies get better and they can sometimes drop the pills. ...Read more

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How many Benadryl (diphenhydramine) allergy pills do I take?

How many Benadryl (diphenhydramine) allergy pills do I take?

Perhaps, one: See prior answer for details about benadryl (diphenhydramine). An over the counter dose is 25 mg (the same dose they put in many 'sleep aides' like tylenol-pm, where the side effect of Benadryl (diphenhydramine) of drowsiness is the main ingredient). If taking it for typical allergies (runny nose, watery eyes, sneezing), could try one tablet. But there are better ones today with less side effects (zyrtec, allegra, claritin, etc). ...Read more

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How long does Benadryl (diphenhydramine) allergy stay in the body?

How long does Benadryl (diphenhydramine) allergy stay in the body?

A long time: The half life is 8 hours. Assuming that after 4 half lives it is eassentially gone it would take upwards of 32 hours to be eliminated. ...Read more

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Is it safe to take Benadryl (diphenhydramine) every day for allergies?

Is it safe to take Benadryl (diphenhydramine) every day for allergies?

YES!!: Benadryl (diphenhydramine) taken properly is pretty benign and can be taken for chronic allergies. As long as it works and you do not exceed the recommend dose. Benadryl (diphenhydramine) is also in many over the counter sleep medications so be careful to not double dose! ...Read more

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How long does Benadryl (diphenhydramine) allergy med stay in your system?

7-18 hr, effectively: That's with a normal dose. The half-life (time it takes 1/2 the med to leave your body) is 3.4 to 9.2 hrs. Double that time and 75% of it has left your system at which point it's generally not helping anymore. Triple it and 87.5% is gone, etc.
If you take twice the normal dose you could still have a significant amount after more than 24 hours. ...Read more

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What would happen if I took extra Benadryl (diphenhydramine) allergy pills?

What would happen if I took  extra Benadryl (diphenhydramine) allergy pills?

Perhaps, one: See prior answer for details about benadryl (diphenhydramine). An over the counter dose is 25 mg (the same dose they put in many 'sleep aides' like tylenol-pm, where the side effect of Benadryl (diphenhydramine) of drowsiness is the main ingredient). If taking it for typical allergies (runny nose, watery eyes, sneezing), could try one tablet. But there are better ones today with less side effects (zyrtec, allegra, claritin, etc). ...Read more

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Could Benadryl (diphenhydramine) allergy and cold affect my awareness at all?

Could Benadryl (diphenhydramine) allergy and cold affect my awareness at all?

Yes: Benedryl is an antihistamine that can cross into the brain and interfere with the message bearing chemicals between the nerves. This often causes sleepiness. It is the main ingredient in most over the counter sleep aids. All such medications bear a warning in small print if you read the package insert. ...Read more

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What is the definition or description of: Benadryl (diphenhydramine) allergy?

What is the definition or description of: Benadryl (diphenhydramine) allergy?

Antihistamine med: This refers to the variety of Benadryl products available that contain diphenhydramine, an older antihistamine. They include dye-free liqui-gels, ultratab tablets, fast melt tablets, pre-filled spoons, allergy liquid and dye-free allergy liquid. The ultratab and allergy liquid are the only products currently available (per website today). ...Read more

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Can I take one cup of NyQuil for my cold, and two Benadryl's for my allergies?

Can I take one cup of NyQuil for my cold, and two Benadryl's for my allergies?

2AntihistaminsSimila: Nyquil cantains aDoxylamine.Acetaminophen and Dextromethorfan
Benadryl (diphenhydramine) is an antihistamine and Doxylamine is also antihistamine.Both are first generation antihistamines and cause sedation.I will not advice to take 50 mgm(2x25mgm)of Benadryl (diphenhydramine) and Nyquil. ...Read more

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Is it ok to give a small amount of Benadryl (diphenhydramine) to a 2 month old with allergies?

Is it ok to give a small amount of Benadryl (diphenhydramine) to a 2 month old with allergies?

Why assume allergy: Babies are not little big people. Their immune system that triggers allergic responses is crude & mostly inactive until older. Some do have food allergies based on long pregnancy exposures, but airborne issues are unlikely until older. Babies do struggle with dust/perfume/fragrances, smoke & respond best to a nasal wash out with saline. Antihistamines thicken mucous & increase their nasal blockage. ...Read more

Dr. John Chiu
1,047 doctors shared insights

Diphenhydramine (Definition)

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


Benadryl (Definition)

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