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Doctor insights on: Overuse Of Antihistamines

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Is antihistamine overuse associated with basophilic leukemia?

Is antihistamine overuse associated with basophilic leukemia?

No: Antihistamines are usually safe and have not been reported to be causing leukemia or cancer. ...Read more

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?

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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Is loratadine the best antihistamine out there?

Which one works: The best for you is the best one for you. ...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?

Describe allergy: Antihistamines are traditionally used to treat allergic reactions. I am curious as to what exactly what happens to you in response to specific antihistamines: benadryl, (diphenhydramine) zyrtec, Claritin etc.
Pepcid is a medication that inhibits acid production by the stomach and would be helpful for treatment of heartburn, indigestion (dyspepsia), gastitis (stomach inflammation) or reflux of acid ...Read more

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Will out of date antihistamine tablets still work?

Maybe: Medications that have passed the expiration may still work, but the pharmaceutical manufacturer cannot guarantee their effectiveness. The longer the medication is out of date, the more likely they are less effective. ...Read more

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Which effects does antihistamines have on the body?

Many: New generation antihistamines (claritin, zyrtec, (cetirizine) allegra) will decrease itching, runny nose and sneezing associated with allergies. They also help with itching and hives. Older antihistamines do the same, but may also cause side effects like dry mouth, dry eyes, GI upset, fatigue, sleepiness, impaired reaction time, and increased appetite. ...Read more

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Can someone name prescribed antihistamines, not otc.

Antihistamines: They are almost all over the counter. The only one that is not yet is one used for deep sedation called hyroxyzine. ...Read more

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Is constant use of antihistamine toxic to body or not?

Not really: Antihistamines are generally safe for long term use. ...Read more

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Do antihistamines lose effectivness after prolonged use?

No: Antihistamines bind to histamine receptors without activating the receptor thereby blocking ability of histamine to bind to the receptor and activate it, causing itching and blood vessel dilatation (producing redness and swelling of affected tissue). The ability of the antihistamine to bind to the histamine receptor doesn't decrease over time. Increased symptoms due to increased allergen exposure. ...Read more

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Can I tell me how I can remove antihistamines from body?

Can I tell me how I can remove antihistamines from body?

Time: Antihistamines such as benadryl, (diphenhydramine) claritin, zyrtec or Allegra will gradually be metabolized naturally by the body by 3 to 5 days. Some of the previous antihistamines (now not currently available could have taken up to 6 weeks). There is no specific "treatment" other than time unless a recent large overdose occurred and this should be evaluated in the er. ...Read more

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What antihistamine has the strongest antiemetic properties?

Dramamine (dimenhydrinate): Dramamine (dimenhydrinate) and Meclizine are some that can be used. Different for different patients. ...Read more

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Can you tell me if I could take two antihistamines at once?

Yes but why: If you take two antihistamines at once you will bring out the less desirable side effects such as drowsiness and dry mouth. There is really no benefit from this and could lead to an overdose if you did this long term. Its best to take one at a time give it a few days to determine if that antihistamine is working and if not change to another. ...Read more

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What is the best antihistamine for treating dermatographism?

Depends: The choice of an antihistamine depends on individual responses. Usually we try to avoid the older antihistamines which make a lot of people groggy. I usually recommend Zyrtec or Xyzal (levocetirizine) which has much less drowsiness effect than the older ones. The next choice would be Allegra. Experiment with them and see which works the best for you. ...Read more

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How old does a kid have to be to start using antihistamines?

How old does a kid have to be to start using antihistamines?

Antihistamine & baby: Some babies receive antihistamines in utero. Benadryl (diphenhydramine) was shown to be safe in pregnancy by a class action suit being brought against it failing to show any deformities that were unexpected compared to the rest of the population. But before using any antihistamine in a tiny baby, check with your doctor. Don't use antihistamines for colds. They make secretions thick and increase sinus infection. ...Read more

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Can you tell me the safest antihistamines for long term use?

Many: All of the newest generation of antihistamines like Zyrtec, Claratin, Allegra, Xyzal, (levocetirizine) or Clarinex are very safe for long term use. ...Read more

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What consequences result from using antihistamines long term?

What consequences result from using antihistamines long term?

Break: What do you mean long time? Its good to give break to antihistamine, do saline rinse b, use pnaris nasal emollient with q-tip, wear a mask in yard and car, house carpet free bed room. All pills have side effects. Effects are they dry you up s/e many. ...Read more

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Can you tell me how many antihistamines can you take per day?

Can you tell me how many antihistamines can you take per day?

Antihistamines: You should follow the prescription given to you or the maximum amount on the medication insert, do not self medicate. If higher doses are necessary, they should be guided by an experienced allergist. ...Read more

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Can we use antihistamine containing drugs in hypertensive ptn.

Antihistamine and BP: Antihistamines are fine, but be cautious with those combinations that contain decongestants. ...Read more

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Which is a good antihistamine that will not enlarge a prostate?

Which is a good antihistamine that will not enlarge a prostate?

Not related...: Antihistamine can decrease bladder contracting ability so its use in the elderly may make some developing urinary retention. Such situation mislead some people to think antihistamine makes prostate enlarged, that is, not true, but further impairing bladder ability to squeeze urine out of bladder through the already narrowing prostate urethra. ...Read more

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Is it possible for someone to be allergic to every antihistamine?

Is it possible for someone to be allergic to every antihistamine?

No: People may not be able to tolerate the side effects from antihistamines but not allergic to all of them. In fact, allergy to antihistamine has not been documented except for perhaps contact sensitization to topical benadryl (diphenhydramine). ...Read more

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Is it harmful if you take an antihistamine when it is not needed?

Probably not: Antihistamines are one of the safest classes of medications and have been available since the 1940s. At usual doses, there is very few side effects and no harm that will come from taking an antihistamine, especially the newer generation ones such as claritin, clarinex, zyrtec, xyzal (levocetirizine) or allegra. ...Read more

Dr. Paul Carter
643 Doctors shared insights

Antihistamine (Definition)

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