Top
20
Doctor insights on: Antihistamines Allergies

Share
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


3

3
What meds can be used long-term to help with thick mucus back of nose (and sticky PND)? Xrays, steroids, antihistamines, allergy tests, PPIs all tried

What meds can be used long-term to help with thick mucus back of nose (and sticky PND)? Xrays, steroids, antihistamines, allergy tests, PPIs all tried

Saline irrigation: Try saline irrigation to see if this helps. Mucinex (guaifenesin) may also be tried. Be sure however that you don't have a condition known as bile reflux (for which PPI would not work) or dry mouth (not enough salivary secretion from an autoimmune disorder or mouth-breathing). ...Read more

4

4
Rhinitis 8 yrs, IgE 867, use many antihistamines, allergy shots, nasal sprays.Sinusitis after stoppage of sneezing.How to stop all this?Is hormonal cause?

Rhinitis 8 yrs, IgE 867, use many antihistamines, allergy shots, nasal sprays.Sinusitis after stoppage of sneezing.How to stop all this?Is hormonal cause?

2nd opinion: I presumed you have had a workup by an allergist who has instructed you on the proper technique on the nasal spray and you have followed the instructions on avoidance measures. Have you tried Dymista or singulair (montelukast) yet? And yes, hormone can affect nasal congestion being most evident in some women during pregnancy. I would seek a 2nd opinion from another allergist if symptoms remain uncontrolled. ...Read more

5

5
What are some good natural alternatives to taking antihistamines for allergies?

What are some good natural alternatives to taking antihistamines for allergies?

Natural : Consider saline nasal rises such as neilmed that you can get at any pharmacy without a prescription to remove nasal allergies but also using a otc med such as naph con a. ...Read more

6

6
I'm curious what occurs if i forget to stop taking antihistamines before allergy testing?

I'm curious what occurs if i forget to stop taking antihistamines before allergy testing?

May alter test: When allergy testing you expose the mast cells that release histamine to possible allergins. If allergic there is a histamine release. It is this histamine that gives you the watery eyes, runny nose and general allergic feeling. Taking antihistamines during testing would likely blunt the release and probably alter the results making you seem less allergic to the allergn. ...Read more

7

7
Can you tell me what occurs if i forget to stop taking antihistamines before allergy testing?

Can you tell me what occurs if i forget to stop taking antihistamines before allergy testing?

No response: The antihistamines block the natural immune response to a certain stimulus you may be allergic to. If you take them before an allergy test you may not respond appropriately. So the test results may be wrong. ...Read more

8

8
Will taking antihistamines for allergies lower my eosinophil blood count.

Will taking antihistamines for allergies lower my eosinophil blood count.

No: Anti-histamines will not reduce your eosinophil count. However, their number may be higher with ongoing exposure to allergens and with atopic dermatitis (allergic eczema). If you have no allergies, an increased number of eosinphils has many causes besides hodgkin's disease. As it seems you have allergy symptoms, see a board-certified allergist for appropriate evaluation. ...Read more

See 2 more doctor answers
9

9
Have you had success with alternative allergy treatments instead of antihistamines and allergy shots?

Have you had success with alternative allergy treatments instead of antihistamines and allergy shots?

Natural : Consider saline nasal rises such as neilmed that you can get at any pharmacy without a prescription to remove nasal allergies but also using a otc med such as naph con a. ...Read more

10

10
Is it ok to take zyrtec (cetirizine) (antihistamine for allergies) and dayquil (cold/flu medicine) together?

Is it ok to take zyrtec (cetirizine) (antihistamine for allergies) and dayquil (cold/flu medicine) together?

Depends: If you are taking plain zyrtec (cetirizine) (antihistamine only) you can take dayquil, but you should not take nyquil which also contains an antihistamine. Zyrtec (cetirizine) d contains a decongestant and antihistamine so it should not be mixed with other meds such as dayquil. It is always important to read the ingredient labels of any over the counter medicines as many medicine contain the same or similar ingredients. ...Read more

11

11
My doctor told me not to take antihistamines before allergy test but I've been taking nasonex (mometasone) and Otrivin decongestant is that ok?

My doctor told me not to take antihistamines before allergy test but I've been taking nasonex (mometasone) and Otrivin decongestant is that ok?

Okay: A number of medications should be discontinued prior to allergy skin testing. Steroid nasal sprays like nasonex (mometasone) may be continued. Otrivine is a nasal decongestant which should only be used for temporary relief of symptoms may be continued. Escitalopram and inhalers and nebulizers may be continued. ...Read more

12

12
When is the best time to take an antihistamines for an allergy? Why?

When is the best time to take an antihistamines for an allergy? Why?

It depends: It depends on the antihistamine and when you are exposed to the cause for your allergies. Antihistamine pills generally take at least 30 minutes to two hours to take effect and peak hours later. Pollen levels are highest in the morning, but if you are exposed to other allergens such as animal dander or dust, those levels would affect you at night. Take it a few hours before your worst time. ...Read more

13

13
Is it safe to take antihistamines for banana allergies?

Yes depending: It depends on the symptoms. Antihistamines will help itching rashes sneezing, runny nose but you may need additional medicine for cough and wheeze. ...Read more

15

15
I'm looking for a natural antihistamine for seasonal allergies rather than using zyrtec (cetirizine)?

I'm looking for a natural antihistamine for seasonal allergies rather than using zyrtec (cetirizine)?

Natural treatments : Natural treatments are medications too. Usually not as well studied or characterized for benefit and safety as those approved by the fda. I don't know of any natural antihistamines per se but butterbur has been reported to have benefits. A very safe alternative to allergy medicine is buffered saline washes. These can be purchased or home made but certain hygienic guidelines should be followed. ...Read more

See 1 more doctor answer
17

17
What is a good otc to take as an effective antihistamine pill for allergy related sneezing? Btw, I don't like putting mists in my nose.

What is a good otc to take as an effective antihistamine pill for allergy related sneezing? Btw, I don't like putting mists in my nose.

2nd generation : antihistamines, as loratadine, cetirizine or fexofenadine OTC, can be used as a start, but read the labels carefully, take either one regularly, not on as needed basis, preferably at night time, only once a day. You can try for a week or two, if no improvement, you need to see your doctor who may refer you to an ENT / Allergist, good luck ...Read more

18

18
What is causing my all over itching without a rash? no known allergies. Antihistamines and lotions do not help. Mild soaps, detergents, etc do but hel

What is causing my all over itching without a rash? no known allergies. Antihistamines and lotions do not help. Mild soaps, detergents, etc do but hel

Dry skin: In the winter months, the first thing I consider would be dry skin. Try using unscented soap and apply a skin moisturizer all over within 3 minutes after bathing to see it this helps . It may take a few days for the skin to calm down. If problem persists, then need to consult a dermatologist or allergist. ...Read more

20

20
Do antihistamines help with food allergies?

Do antihistamines help with food allergies?

Yes: They can help alot depending upon what you are allergic to. Some food allergies, such as peanut, even oral antihistamines are not strong enough to prevent anaphylaxis and avoidance is the only "treatment" in wide spread use. Milder allergies can be improved with antihistamines. Check with your allergist. ...Read more

See 1 more doctor answer

Benadryl (Definition)

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


Dr. Paul Carter
630 doctors shared insights

Antihistamine (Definition)

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