Doctor insights on:
Cetirizine Vs Fexofenadine
Depends: All 3 of the mentioned new generation antihistamines (zyrtec, allegra, (fexofenadine) clarinex) are effective for treating allergic rhinitis and hives. What's interesting is that each individual person may respond better to one over the other. While every allergist probably has his/her favorite, truth is...They all work. If not happy with one, try a different one! ...Read more
Fexofenadine is an antihistamine which is used to treat allergies such as hayfever, and hives. It can be taken once or twice a day. It is a second generation antihistamine and does not cause as much drowsiness as other antihistamines such as Diphenhydramine (benaryl) or chlorpheniramine. Always be careful about drowsiness with any antihistamine especially if driving ...Read more
Not advisable: I would not take both at the same time because these medications do the same thing and can have additive effects if used together. They are both antihistamines for the treatment of allergies. If one of these alone is not helping, sometimes switching to the other one is helpful. If none of these remedies work, then consultation with your doctor or allergist would be appropriate. ...Read more
Different molecules: Zyrtec (cetirizine) is an antihistamine called ceterizine and Allegra is fexofenadine. They both block histamine type 1 receptors on cells and diminish the allergic reaction. Overall, they have the same effect for people, but some people prefer one more than the other based on their personal responses to the rx. ...Read more
NO: Two antihystamines, not recommended. Take maximum dose of one and that is it! ...Read more
Allergy meds: Hello. Allergy medication like zyrtec, Allegra and Claritin (loratadine) help with the symptoms of allergy. The dose for an adult is 180 mg for Allegra and 10 mg for zyrtec. If you take these meds on the same day, an increase in dryness as well as sedation will likely occur. Especially 4 Allegra and 1 zyrtec. There are other medications to help with your allergies. See your doctor. ...Read more
See your doctor: This is a high dose of antihistamines and should be best directed by an allergist. Sometimes the high doses are mandated to treat certain conditions, but not seasonal allergies. You should consult an allergist about your symptoms for the best way to treat them. ...Read more
I took both Zyrtec and Allegra (fexofenadine) today by accident. Are there any interactions I should be aware of?
Probably ok: They're both antihistamines and generally quite safe. Should be just fine. ...Read more
Is it okay to take a 24 hr zyrtec in the am and a 12 hour allegra (fexofenadine) at night? The zyrtec alone hasn't been working well enough lately.
Allergy meds: Hello. Allergy medication like zyrtec and Allegra (fexofenadine) help with the symptoms of allergy. The dose for an adult is 180 mg for Allegra (fexofenadine) and 10 mg for zyrtec. If you take both on the same day, an increase in dryness as well as sedation will likely occur. There are other medications to help with your allergies. Instead of taking these two medications, see your doctor for other options. ...Read more
Can I mix allegra (fexofenadine) & zyrtec for my allegy relief if allegra (fexofenadine) alone is not enough?
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 category, like a prescription nasal steroid spray. ...Read more
Which one is more effective or works faster and better ; zyrtec or Allegra (fexofenadine). Claratin not working for me.
My son is 10 weighs 113 lbs 4'9" and takes Zyrtec daily but I'm out and can't get any more until the 18th. Would Fexofenadine 180 mg be okay for him? He catches everything at school for some reason when he isn't on Zyrtec.
Decongestants: Most allergy medicines contain antihistamines, decongestants or a combination of the two. Antihistamines help runny, watery or itchy nose or eyes. Decongestants help congestion and stuffiness. Allegra, claritine and zyrtec are pure antihistamines. Allegra d, Claritin (loratadine) d and zyrtec d contain pseudo Ephedrine (sudafed).). 'd' stands for decongestant. At night it can keep you awake. ...Read more
Allegra (fexofenadine) safer: Zyrtec causes sedation & slows reaction time in about 8% of users. Allegra (fexofenadine) does not. In high doses zyrtec can have adverse effects on cardiac rate & rhythm through its mild effects as an anticholinergic agent. Not so with allegra (fexofenadine). The parent compound of allegra (fexofenadine), terfenadine marketed as seldane, caused rare but serious heart rhythm problems. Allegra (fexofenadine) does not cause these problems at all. ...Read more
Rx: I think that you should select the medication that has the best result for your symptoms. ...Read more
I have daily hive break outs and use Allegra (fexofenadine) but I also have anxiety...could the Allegra (fexofenadine) be exacerbating my anxiety? Is Zyrtec better for anxiety?
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 be worth trying Zyrtec to see if there is any difference in your anxiety. Talk to your doctor about it and see what is the best option. Some common SE of Fexofenadine are:
pain in the arms, legs, or back. ...Read more
Post-nasal drips?: If the cough is from post-nasal drips, then I prefer using cetirizine or fexofenadine. A better option would be a nasal steroid. However if the cough is from a sinus infection, you may then need an antibiotic; from asthma, you will need asthma medications. Best to see a doctor. ...Read more
Are there any new, more effective allergy meds than zyrtec, claratin, allegra (fexofenadine)...etc.?
Allergies - hayfever: Everyone is unique and that includes the distribution of histamine receptors that we all have. Thus some anti-histamines work well for some people while other meds don't. It's a matter of finding the right antihistamine for u. Older meds like Benadryl (diphenhydramine) might actually be worth a try. Seeing an allergist would be best as there are new meds just coming out now for allergies (grastek, oralair, Ragwitek ...Read more
Is zyrtec or allegra (fexofenadine) better for chronic hives of unknown cause? Can I take either one daily & will it help hives go away?
Yes, it usually helps and you may take even up to 4 x daily (or 4x the average dose) if necessary. Zyrtec works a little faster and may be more potent than Allegra (fexofenadine) but there is a small chance of getting drowsy.
At times hives can be so severe that no antihistamine would control them. If this has been present for >8 wks, consider seeing an allergist. ...Read more
I take fexofenadine every day, but am thinking of adding claritin (loratadine) or zyrtec as my allergies are very bad right now. Is that advisable?
NO. One or the other: But not all of them.Get a more detailed answer ›
I read on the internet that it is often more effective to alternate days taking zyrtec and allegra, (fexofenadine) than just one drug alone. Is that true? -allergies
Maybe, but...: I have not heard of anyone benefiting from alternating days. More like alternating weeks or months on the meds. Wouldn't hurt to try, I guess. ...Read more
I've tried Zyrtec and allegra (fexofenadine) for my allergies and both of them make me feel real tired and spaced out. How can I treat allergies if I can't take meds?
What antihistamine would be comparable to fexofenadine (allegra)? Is Claritin (loratadine) or zyrtec comparable?
Will anti histamines such as zyrtec or allegra (fexofenadine) so on, effect methacholine since its a histmane and cause negative results?
It may potentially: Antihistamines are not to be taken for at least 24 hrs but preferably 72 hrs prior a methacholine challenge. Having said that, I would doubt the average dose of AH is potent enough to block a truly positive response. ...Read more
Slightly higher eosonophil count. 6 months hv eosonophilc esophagits and skin itching. Did endo sopy. On omprezolle allegra (fexofenadine) and zyrtec. Not getng btr.
EoE: Eosinophilic esophagitis is a newly defined disease. For a majority of adult, it is due to gastroesophaeal reflux disease. That is why omerprazole is first tried in your case. In children and some adult, it can be related to food allergy especially if omerprazole by itself does not help your symptoms. If this is the case, you need to be seen by an allergist. We are specialized in this condition. ...Read more
I have very bad allergies. Allegra (fexofenadine) 180 use to work but it wears off fast. Zyrtec doesn't do anything what should I do. Always congested & feeling bad?
Other meds: Antihistamines do not manage congestion well which is why decongestants are often added. Singulair (montelukast) and nasal steroids manage all allergy symptoms and in head to head comparisons steroid sprays control symptoms better than oral antihistamines. Topical spray antihistamines are also an option. Allergy shots help reduce or eliminate medications in 2/3 of patients so may need to see allergist. ...Read more
Both: Both should be the same. However ask your pharmacist who knows your medication history to tell you which you should use, if either. ...Read more
Allergy Dr ordered allergy bloodtests, I take Zyrtec, Allegra, (fexofenadine) singular for chronic urticaria each day. He said these will not affect the tests, true?
True: Blood tests won't be affected with the drugs you are on, only skin allergy tests would be, goodluck ...Read more
Will allegra (fexofenadine) or zyrtec help treat fatique, mood disturbances, and facial tingling associated with histamine and cytokine release? Or is it only effective at treating the symptoms listed on the box?
Would taking zyrtec, allegra (fexofenadine) and montelukast effect my blood work at a lab? I have an appointment soon and would like to know b4 I begin medication
Depends on your labs: Talk to your doctor for more information, I am available for second opinion if needed ...Read more
Not much different: There are not much difference between two medications and they are weak medications for allergy symptoms. It might work in the beginning but you would need stronger and better treatment methods if your symptoms persist. ...Read more
Is it safe to take cetirizine, fexofenadine or loratadine for allergies if you are taking Sinemet (carbidopa and levodopa)?
Safe: But choose only one antihistaminic at a time ...Read more
Allergist said if cholinergic urticaria doesn't improve, take 20 mg Zyrtec; Max limit is 20 mg zyrtec + 1 tab 180mg allegra (fexofenadine). Safe? Is it okay?
Yes: Yes, these doses of antihistamines are safe. But make sure you stay hydrated (drink lots of water throughout the day while on this dose). ...Read more