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Doctor insights on: Antihistamine Structure

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Dr. Paul Carter
642 doctors shared insights

Antihistamine (Definition)

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


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Zyrtec or allegra (fexofenadine) for hives: which is the better antihistamine?

Zyrtec or allegra (fexofenadine) for hives: which is the better antihistamine?

Zyrtec (cetirizine): Which drug is better fora specific patient cannot be predicted. I generally try zyrtec first because it does cannot claim not sedating. A little sedation helps alleve itching. Allegra, (fexofenadine) claritn, and Clarinex are allowed to claim no sedation. ...Read more

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Is Flonase an antihistamine?

No: Flonase is a nasal steroid spray. It is often used in conjunction with an antihistamine. The most commonly used antihistamines today are the non-sedating antihistamines: claritin, Allegra and zyrtec. Each of these had a generic drug available, too. ...Read more

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Which is better allegra (fexofenadine) or zytrec?

Which is better allegra (fexofenadine) or zytrec?

Depends: Both Allegra (fexofenadine) and zyrtec are effective new generation antihistamines that are generally very well tolerated. Some people respond better to one antihistamine compared to another (it's not clear why), so try both and see what works better! ...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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What antihistamine would be comparable to fexofenadine (allegra)? Is Claritin (loratadine) or zyrtec comparable?

All similar: The various antihistamines such as fexofenidine, Claritin (loratadine) and zyrtec are comparable for allergy symptoms. Some people will find that one medication works better for them than another one. ...Read more

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Is zyrtec or polaramine (dexchlorpheniramine maleate) stronger?

Is zyrtec or polaramine (dexchlorpheniramine maleate) stronger?

Zyrtec (cetirizine): Polaramine (dexchlorpheniramine maleate) (dexchlorpheniramine) is an older antihistamine that is not used as often due to dosing every 8 hours and side effects (impaired driving ability). Effectiveness of polaramine (dexchlorpheniramine maleate) was similar to Claritin (loratadine) while a study in healthy adults showed zyrtec (cetirizine) to be a better antihistamine than polaramine (dexchlorpheniramine maleate). Go to: http://www.Ncbi.Nlm.Nih.Gov/pubmed/2972549. ...Read more

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Which is stronger: astelin (azelastine) or patanase?

Which is stronger: astelin (azelastine) or patanase?

Have to try : Both are antihistamine nasal sprays, and both are effective. However, many people find that one works better than the other for them. The only way to tell which works best for you is to try each one for a month and compare. ...Read more

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Which is better zytrec or claritin (loratadine)?

Which is better zytrec or claritin (loratadine)?

Personal preference: Both are effective for hay fever and many people find them to be similar in effectiveness. However, some prefer one over the other. ...Read more

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Is naphazoline an antihistamine?

Is naphazoline an antihistamine?

Clears the red: Naphazoline is an agent which causes the blood vessels in your eye to constrict and thus, resolving redness. ...Read more

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Is allegra (fexofenadine) a stimulant?

No: Allegra (fexofenadine) is an anti-histamine. It is one of the newer non-sedating anti-histamines and is used to treat people who are suffering allergy symptoms. ...Read more

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Does cetirizine (aka zyrtec) allergy medication contain any stimulant components?

Does cetirizine (aka zyrtec) allergy medication contain any stimulant components?

No: Cetirizine is also marketed with pseudoefedrine, which can be a stimulant in some people. Avoid zyrtec-d. ...Read more

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Is Benadryl (diphenhydramine) and Claritin the same?

Is Benadryl (diphenhydramine) and Claritin the same?

No and yes: They are both antihistamines but Benadryl (diphenhydramine) often causes drowsiness but is more effective in drying up the nose. It also has a shorter duration of action than claritin. ...Read more

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What is the best OTC antihistamine for eczema? Claritin, (loratadine) allegra or zyrtec?

What is the best OTC antihistamine for eczema? Claritin, (loratadine) allegra or zyrtec?

NONE: No antihistamine helps eczema. Antihistamines are useful for histamine- driven conditions: urticarias. Hives. Antihistamines relieve itch if there is urticaria, but not eczema. ...Read more

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Chlorpheniramine maleate or allegra (fexofenadine) which is safer?

Both: Antihistamines are extremely safe. Any antihistamine can cause drowsiness, but second-generation antihistamines are much less likely to do so. Drowsiness with chlorpheniramine is the biggest side effect to watch for, between these two meds. ...Read more

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What is better antihistamine Cetirizine or Fexofenadine?

What is better antihistamine Cetirizine or Fexofenadine?

I like Cetirizine: My personal preference is Zyrtec (cetirizine) however both have similar effects. Allegra (fexofenadine) could be considered the least sedating out of all the OTC antihistamines. ...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