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Doctor insights on: Dogs And Antihistamines

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I seem to have developed an allergy to our new dogs. Tried several antihistamines but Benadryl (diphenhydramine) works best. Can i take on a regular basis?

I seem to have developed an allergy to our new dogs.  Tried several antihistamines but Benadryl (diphenhydramine) works best. Can i take on a regular basis?

Allergy: Remember the best treatment is avoidance and we have the same problem. I'd sacrifice to be with my dogs too, hehehe. If you can tolerate Benadryl (diphenhydramine) and it's the only thing that works, you can take it regularly, but remember, it can make you sleepy. Have fun with the dogs, i hope you will develop tolerance. ...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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I gave expired antihistamine syrup to my 30 months old son incidentally...Is it dangerous?What s the side effect on him?

I gave expired antihistamine syrup to my 30 months old son incidentally...Is it dangerous?What s the side effect on him?

Expired drugs: There should be no side effects as expiration is usually based on loss of drug effectiveness. Drug companies err on the side of shortening times to expiration. Actually many drugs are effective long after expiration dates. Expired drugs are commonly used effectively by volunteer organizations when no other drugs are available. Relax! ...Read more

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What are the common uses of antihistamine?

What are the common uses of antihistamine?

Antihistamine 4 itch: Antihistamines (ah) block histamine receptors and stop histamine from causing itching and swelling. They are mainly used to treat allergies and hives. Some are sedating; those are used as sleep aids. Many otc sleep meds contain Diphenhydramine (benadryl). ...Read more

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Is Flixonase an antihistamine?

Is Flixonase an antihistamine?

Steroid Nasal Spray: Flixonase or Flonase (fluticasone proprionate) is a steroid nasal spray commonly used to treat allergic rhinitis by decreasing the allergic inflammation in the nasal mucosa. It is not an antihistamine. ...Read more

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Is there an antihistamine cream?

Is there an antihistamine cream?

Yes, but avoid: Benadryl (diphenhydramine) cream is available. While some people find temporary relief for insect bites with this, in general it is not very effective compared to other antihistamines taken as pills or tabs. For generalized rash, it really doesn't make sense. ...Read more

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Does antihistamine make you drowsy?

Older ones do: First generation antihistamines (benadryl, clor-pheramine, atarax) cross the blood brain barrier and cause lethargy. Second generation (allegra, claritin, zyrtec, xyzal, (levocetirizine) clarinex) cause the blood brain barrier at a much lesser amount and more targeted to the h1 receptor. ...Read more

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Can you use antihistamine and wine?

Can you use antihistamine and wine?

Not a good idea: Antihistamines (especially the older ones such as benadryl) can cause drowsiness and impairment and this can be worsened by the effect of alcohol even at regular doses. There are other allergy medications available that can be taken if a glass of wine is desired. ...Read more

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Is it ok to take antihistamines with ?

Is it ok to take antihistamines with ?

With what?: If you are thinking about drinking alcohol, do not do it. Antihistamines might potentiate the effect of alcohol. ...Read more

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Can you take antihistamine with codeine?

Can you take antihistamine with codeine?

Yes: There is a medication called tussionex that combines an older antihistamine (chlorpheniramine) with hydrodocone (similar to codeine). This medication is especially effective for severe irritant cough. It is important to carefully follow dosing directions. ...Read more

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Is it safe to take an antihistamine daily?

Is it safe to take an antihistamine daily?

Yes but why: Although antihistamines are a very safe class of medications, the better question is why is there a need to take them daily? If antihistamines are being taken for treatment of nasal symptoms, see an allergist to identify the trigger. ...Read more

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Does an antihistamine help IC? If so how?

Does an antihistamine help IC? If so how?

IC: I commonly use anti histamine for my IC patients. Exciting histamine receptors in the bladder can stimulate inflammation. Similar responses are seen in sinus and stomach. The antihistamine therefore blocks one possible arm of the inflammatory cycle. ...Read more

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Which antihistamine dries up drainage best?

Which antihistamine dries up drainage best?

1st generation: as diphenhydramine, because of more anticholinergic effects, but would cause more sedation, read the labels well, don't drive or operate machinery while using them, if they still don't work, see your doctor for better diagnosis and management ...Read more

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Which is the best antihistamine for children?

Which is the best antihistamine for children?

Several are good: Loratedine (Alavert,Claritin), Cetirizine( Zyrtec)and Fexofenadine (Allegra)are all effective. Dyphenhydramine (Benadryl) is short acting so if you want the reaction not to come back in the middle of the night then one of the above would be better. Remember that you should not give children under 2 antihistamines without checking with your doctor. Between 2-4 y/o you should also ask. Not for colds ...Read more

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How long do antihistamines stay in your system?

72 hrs: The biologic effects no longer than 72 hours even though the drug may still be detectable for up to a couple of weeks with certain antihistamines. ...Read more

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Docs, what's a good yr round OTC antihistamine?

Whatever works: There are two important considerations. Efficacy and side effects. Caution must be taken with combination meds (antihistamines along with decongestants). Men with prostate issues and anyone with cardiac/BP issues. Also glaucoma can be affected especially by first generation antihistamines such as Benadryl (diphenhydramine). Best bet, ask your doctor :-) ...Read more

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How can I tell if my antihistamines are working?

Feeling better?: The symptoms that they are intended to treat improve. ...Read more

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Is it ok to take three different antihistamines?

Not a good idea: Unless specifically instructed by an allergist. I have only seen people on more than one antihistamine for severe recurrent hives (urticaria). Taking too many antihistamines at once can cause issues with urinary retention and other problems. ...Read more

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I am allergie to antihistamine, can I take pepid ?

I am allergie to antihistamine, can I take pepid ?

Yes: Antihistamine blocks h1 receptors, while Pepcid (famotidine) blocks h2 receptors, however if u r in doubt of taking any medicine: pls go to any hospital, sit in the er waiting area, adminster the medicine, wait for about an hour, any serious allergic reaction would appear in the 1st hr, god forbids, then u r in the very place u want to be, pls excercise caution with multiple meds as u r on an anticoagulant. ...Read more

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Dr. Paul Carter
630 doctors shared insights

Antihistamine (Definition)

Sedating and non-sedating antihistamines prevent and treat allergic reactions, and are ...Read more