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Allegra

A 54-year-old male asked:
Dr. William Lizarraga
15 years experience in Internal Medicine
Most likely: But this would make side effects more likely - dry mouth and eyes for example, perhaps sedation / tiredness. Might think of mixing medicines from diff ... Read More

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A 44-year-old member asked:
Dr. Brian Affleck
29 years experience in ENT and Head and Neck Surgery
Expired medication: Typically, when a medication expires, it's because it loses its potency or effectiveness. There are some medications that, with time, do breakdown wi ... Read More
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A male asked:
Dr. Clarence Grim
56 years experience in Endocrinology
Allegra: go to drugs.com and look it up. specific brand you have.
A 39-year-old member asked:
Dr. Brant Ward
12 years experience in Allergy and Immunology
20-30 minutes: Oral antihistamines like Allegra (fexofenadine) need to be absorbed by the digestive system and distributed thru the body before they are effective--a ... Read More
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A 42-year-old member asked:
Dr. Brian Bezack
17 years experience in Pediatric Pulmonology
No: Cetirizine is zyrtec and Pseudoephedrine is sudafed. Claritin is most similar to cetirizine; the generic name is loratadine.
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A 39-year-old male asked:
Dr. M. Jay Petruska
31 years experience in Family Medicine
Allergies: The generic name for zyrtec is cetirizine.
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A 35-year-old member asked:
Dr. Stephen Kimura
34 years experience in Allergy and Immunology
Allergies: Allegra and xyzal are two different types of antihistamines. They are called non sedating antihistamines as older antihistamines like Benadryl (diphe ... Read More
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A 51-year-old member asked:
Dr. Michael Zacharisen
32 years experience in Allergy and Immunology
Depends: All 3 of the mentioned new generation antihistamines (zyrtec, allegra, (fexofenadine) clarinex) are effective for treating allergic rhinitis and hives ... Read More
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A 41-year-old member asked:
Dr. Alex Martinez
Specializes in Allergy
For allergies: Allegra (fexofenadine) is an antihistamine approved in the treatment of seasonal allergies as well as hives. It is now available over-the-counter with ... Read More
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A 37-year-old member asked:
Dr. Michele Richards
23 years experience in ENT and Head and Neck Surgery
No: But both work in a similar fashion to block histamine.
A 48-year-old member asked:
Dr. Andrew Murphy
28 years experience in Allergy and Immunology
Yes : Both are antihistamine decongestant combinations and have similar mechanism of action.
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A 46-year-old member asked:
Dr. Anlin Xu
Dr. Anlin Xu answered
23 years experience in Allergy and Immunology
Yes: Claritin is a second generation antihistamine which causes much less drowsiness than first generation antihistamine, like benadryl (diphenhydramine). ... Read More
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A 36-year-old male asked:
Dr. Harold Kim
27 years experience in ENT and Head and Neck Surgery
Antihistamine : Allegra is an antihistamine otherwise known by its generic name fexofenadine. It is similar in effect to Claritin (loratadine) and zyrtec.
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A 41-year-old member asked:
Dr. Michael Zacharisen
32 years experience in Allergy and Immunology
Not exactly: Benadryl (diphenhydramine) is diphenydramine, an old first generation antihistamines that lasts about 6 hours and can cause drowsiness and other side ... Read More
A 53-year-old member asked:
Dr. Zorian Trusewych
41 years experience in Allergy and Immunology
Cost: Generics are usually cheaper because of the lack of marketing overhead, and are frequently made by the brand name companies.
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A 47-year-old member asked:
Dr. Stuart Kanter
20 years experience in Geriatrics
Yes: Both are antihistamines. They exert similar physiologic effects.
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A 54-year-old member asked:
Dr. Suresh Anand
25 years experience in Allergy and Immunology
Antihistamine: Benadryl, (diphenhydramine) polaramine, chlortrimeton etc., are old time antihistamines used for runny nose, sneezing, itching, and other allergies. ... Read More
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A 44-year-old member asked:
Dr. Donald Alves
23 years experience in Emergency Medicine
Kinda mostly: Loratadine is a 'non-sedating antihistamine, ' and Diphenhydramine (/benadryl) is a sedating antihistamine (aka: older / h1 & h2 blocker), so yes, the ... Read More
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A 41-year-old male asked:
Dr. Lauren Standig
31 years experience in Internal Medicine
Allegra (fexofenadine) vs Zyrtec : Allegra (fexofenadine) does not commonly cause or worsen anxiety. That said it can cause problems when taken in combination with other meds. It might ... Read More
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A 50-year-old member asked:
Dr. Jeffrey Factor
35 years experience in Pediatric Allergy and Asthma
None of these: These medications are antihistamines which counter the affects of allergies. They are not antibiotics which are typically prescribed for sinus infect ... Read More
A female asked:
Dr. Nayla Mumneh
28 years experience in Allergy and Immunology
Be careful from now : The medications you listed are not too bad, but you must be careful what you take from now on. Singulair (montelukast) is ok take while pregnant, the ... Read More
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A 38-year-old member asked:
Dr. Holly Maes
35 years experience in Pediatrics
Similar, but...: Allegra, Zyrtec and Claritan are all very similar meds and there isn't really one that is better, although one may work better in a certain patient. ... Read More
A 48-year-old member asked:
Dr. Richard Bensinger
51 years experience in Ophthalmology
Anti histaminic: Claritin (loratadine) is a prescription anti-histaminic (anti-allergic) medication which has less of a tendency to cause sleepiness as a side effect. ... Read More
A 45-year-old member asked:
Dr. Michael Zacharisen
32 years experience in Allergy and Immunology
Close: Xyzal (levocetirizine) (levo-cetirizine) is the r-isomer, of zyrtec (cetirizine). Medications are usually a combination of r + s (called racemic). T ... Read More
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A 47-year-old female asked:
Dr. Bradford Romans
36 years experience in Internal Medicine
It may: Sounds like you need the help of a board certified allergist. Good luck.
A 53-year-old member asked:
Dr. Donald Alves
23 years experience in Emergency Medicine
Probably yes.: Many people report their 'daily' non-sedating antihistamine in the am does not provide relief until next am. So, if no concerns for gu/heart/bp/med-co ... Read More
A 55-year-old member asked:
Dr. Suresh Anand
25 years experience in Allergy and Immunology
AllegraD, jittery: Allegra (fexofenadine) d is a combination of non drowsy antihistamine and pseudo Ephedrine (sudafed). For many people decongestant portion causes jitt ... Read More
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A 49-year-old member asked:
Dr. Keith Stockerl-Goldstein
29 years experience in Hematology and Oncology
All similar: The various antihistamines such as fexofenidine, Claritin (loratadine) and zyrtec are comparable for allergy symptoms. Some people will find that one ... Read More
A 47-year-old female asked:
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience in Allergy and Immunology
Stay with xyzal (lev: If one class of antihistaminic is controlling ur symptoms, better stick to it, especially that xyzal (levocetirizine) is supposedly non sedating and d ... Read More
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A 44-year-old member asked:
Dr. Brian Novick
42 years experience in Allergy and Immunology
Yes just look: On the box or bottle label.
A 43-year-old member asked:
Dr. Guolin Wen
25 years experience in Pharmacology
Yes: Yes.
A 38-year-old member asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience in Allergy and Immunology
Both AH: Both act in similar fashion except that Benadryl (diphenhydramine) causes drowsiness and dry mouth in a much higher percentage of people and it works ... Read More
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A 55-year-old member asked:
Dr. Bac Nguyen
22 years experience in Family Medicine
They are safe meds: Claritin/allegra, available otc as generic loratadine/fexofenadine, are nonsedating antihistamines, often used for seasonal allergic rhinitis. They ar ... Read More
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A 47-year-old female asked:
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience in Allergy and Immunology
Caution with multipl: Caution advised with multiple meds, combination can be altered accordingly, yes Erythromycin and Allegra (fexofenadine) interact, there are other safe ... Read More
A 55-year-old member asked:
Dr. Andrew Murphy
28 years experience in Allergy and Immunology
No: Allegra (fexofenadine) is an antihistamine and not a steroid.
A 32-year-old female asked:
Dr. Daniel Ziegler
29 years experience in Emergency Medicine
Yes: Generally toxic doses of most medications are several times the single dose or they are not approved for sale. While you may experience worsened side ... Read More
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A 30-year-old female asked:
Dr. Kenneth Lanier
9 years experience in Pharmacology
Yes: Yes. Claritin (loratadine) is Loratadine and pseudoephedrine.
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A 42-year-old female asked:
Dr. Sergio Schabelman
47 years experience in Cardiology
Not common: Medication is quite safe. Sudafed on the other hand, ( that I see in your profile you are taking) should be used very cautiously as it can cause prob ... Read More
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A 41-year-old male asked:
Dr. Albert Melaragno
44 years experience in Pediatrics
Very few: Allegra (fexofenadine) is a very safe and effective anti-histamine. 24 hour med so take it in the morning. Generally does not have any drowsiness asso ... Read More
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A 32-year-old female asked:
Dr. Bernstein Joel
59 years experience in ENT and Head and Neck Surgery
No: Allegra (fexofenadine) is an otc non-sedating antihistamine and as such down regulates the release of histamine from mast cells in the tissue or decre ... Read More
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A 55-year-old member asked:
Dr. Jeffrey Rumbyrt
31 years experience in Allergy and Immunology
Read the label: There is considerable debate about the accuracy of label expiration dates. However, as a general rule, it is best to adhere to what the label states ... Read More
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A 37-year-old member asked:
Dr. Steven Machtinger
43 years experience in Allergy and Immunology
You get 90 mg: If you take 1/2 of an Allegra 180 mg you get 90 mg. The Allegra allergy 12 hour tablet, available over-the-counter, has 60 mg of fexofenadine.The drug ... Read More
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A 26-year-old female asked:
Dr. Mark Loury
38 years experience in ENT and Head and Neck Surgery
Other meds: Antihistamines do not manage congestion well which is why decongestants are often added. Singulair (montelukast) and nasal steroids manage all allerg ... Read More
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A 44-year-old member asked:
Dr. John Overholt
25 years experience in Allergy and Immunology
You could, but: They do exactly the same thing so taking both is just like taking a double dose of one. Instead, you should try something from a different medication ... Read More
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A 54-year-old member asked:
Dr. Paul Carter
29 years experience in Allergy and Immunology
Possibly: Allegra (fexofenadine) has been studied at very high doses with no clinically significant adverse events. However, if a high enough dose is taken the ... Read More
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A 49-year-old member asked:
Dr. Stephen Kimura
34 years experience in Allergy and Immunology
Stop taking it.: The half life of Allegra (fexofenadine) is 14.5 hours in normal individuals. It is metabolized mainly through the liver and GI tract so if you have l ... Read More
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A 32-year-old female asked:
Dr. Joram Seggev
Specializes in Allergy and Immunology
Be happy: You did not mention what strength of Allegra (fexofenadine) you took, but i assume you are worried because you took 2 tablets of 180mg each. We use t ... Read More
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6 thanks

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