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Doctor insights on: Will Benadryl Help Allergies Cough

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If i took cough syrup and have allergies can I take benadryl (diphenhydramine)?

If i took cough syrup and have allergies can I take benadryl (diphenhydramine)?

Yes: But if your cough is not from post-nasal drips, Benadryl (diphenhydramine) won't do anything for you. Make sure your cough is not from a reflux disease. Consult a doctor if the problem is a prolonged one. ...Read more

Dr. Sue Ferranti
3,539 doctors shared insights

Cough (Definition)

The cough reflex is a protective mechanism that uses muscles in your throat and chest to expel mucous and saliva that may contain pathogens that would otherwise possibly be inhaled via aerosol or to expel pathogens infecting the throat and respiratory system. Cough benefits the host by reducing load and benefits the pathogen which may then spread via aerosol. ...Read more


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My 3 year old has a bad cough from seasonal allergies, will benadryl help his cough?

My 3 year old has a bad cough from seasonal allergies, will benadryl help his cough?

May be,: some antihistamines can sedate cough, either directly, or indirectly through drying up the secretions in the upper airways. Don't exceed recommend dosage, and if no improvement, kindly see his doctor, best wishes ...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 wanted to know I took benadryl (diphenhydramine) because my allergies are acting up and I'm stuffed up, i have a cough, I'm weeding because my asthma as well. Is it o?

I wanted to know I took benadryl (diphenhydramine) because my allergies are acting up and I'm stuffed up, i have a cough, I'm weeding because my asthma as well. Is it o?

Probably not: I presume you are asking whether it is ok to do some weeding when your nose is stuffed up and your asthma is not controlled. In general , the answer would be no since you are likely allergic to weed pollen and molds from the disturbed soil. It is also important for you to call your doctor about your asthma. Benadryl (diphenhydramine) or any other antihistamine has no decongesting action, nasal steroid does. ...Read more

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My 6yr old has severe allergies. I gave home benadryl and Tylenol (acetaminophen) about 30 mins apart. But he has a cough. Can I give home delsym?

My 6yr old has severe allergies. I gave home benadryl and Tylenol (acetaminophen) about 30 mins apart. But he has a cough. Can I give home delsym?

Exam: Before giving him a cough medication, have his lungs checked. If he has allergies he may be wheezing or have asthma. In that case his medication needs would be different. Also he may need different medication for his allergies. All the best. ...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 allergies are kicking my but. Im coughing like crazy and also have the irritated throught eyes ect. Can i take benadryl (diphenhydramine) with Hycodan?

My allergies are kicking my but. Im coughing like crazy and also have the irritated throught eyes ect. Can i take benadryl (diphenhydramine) with Hycodan?

Increased sedation: These *may* be taken these together - with certain precautions. They both have the effect of drowsiness, and some people are more susceptible than others. If you become drowsy to both, understand that you're in for a double-whammy. Even if not, it'd be a good idea not to take the first dose in the hours before you have to drive anywhere, but rather in the evening before going to bed. ...Read more

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Is it safe to give my 7 yearold bendryl chewables every night for his nasal drip that makes him cough due to allergies?

Is it safe to give my 7 yearold bendryl chewables every night for his nasal drip that makes him cough due to allergies?

Better medication: There are non sedating medications available that are overall better and safer for your child. Discuss with your pediatrician. ...Read more

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Zyrtec, claritin, singular, and allegra don't work on my 7 yr olds allergies at night (nasal drip & cough) only benedryl. Can he take it every night?

Zyrtec, claritin, singular, and allegra don't work on my 7 yr olds allergies at night (nasal drip & cough) only benedryl. Can he take it every night?

Dose?: Zyrtec & Benadryl (diphenhydramine) are very similar. He should get similar relief if he's taking the right dose for his weight. Benadryl (diphenhydramine) will make him more drowsy. You should talk to his doctor about an rx nose spray to control allergies like Flonase or nasonex. ...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

Dr. John Chiu
2,586 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


Dr. John Chiu
1,045 doctors shared insights

Diphenhydramine (Definition)

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