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