Doctor insights on:
Difference Between Zyrtec And Zyrtec D
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
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
Antihistamine: Benadryl, (diphenhydramine) polaramine, chlortrimeton etc., are old time antihistamines used for runny nose, sneezing, itching, and other allergies. They are very effective but can cause drowsiness and should be avoided in day time. Carefully read all the side effects. Zyrtec , Claritin & Allegra are newer antihistamines, with lot less drowsiness or other side effects. They work fairly well for most people. ...Read moreSee 1 more doctor answer
A decongestant: Allegra products all contain fexofenadine in a dose ranging from 30 to 180 mg. Allegra d comes in a 12 hour product with 60 of fexofenadine plus 120 mg. Of a long acting pseudoephedrine, which is a decongestant. The Allegra d 24 hour contains 180 mg. Of fexofenadine and 240 mg. Of pseudoephedrine. The decongestant may cause insomnia, jitteriness or an increase in blood pressure. ...Read more
Yes : Similarity: in the 2nd generation antihistamine class of drugs. Zyrtec and Claritin (loratadine) are safe in pregnancy. Both can cause dryness and urinary symptoms as a sideffect differences: Claritin (loratadine) does not usually cause drowsiness. Zyrtec typically can. The time it takes to be effective vary as well. As far as effectiveness: depends on person. Zyrtec in some studies have been shown to be faster acting. ...Read moreSee 1 more doctor answer
Not much: Zyrtec is a mixture of two mirror image drugs, levo and dextrocetirizine. Xyzal is a pure levocetirizine. Only the levo form is an active antihistamine. The dextro form is inactive but has no known side effects. The difference is cost, insurance coverage, and patient prejudice or preference. ...Read more
Very similar: Zyrtec is the brand name for the molecule cetirizine, whereas xyzal is levocetirizine, the mirror image. Xyzal came to market when zyrtec was going generic and over-the-counter. There are subtle differences between the two, but they behave very similarly. ...Read moreSee 2 more doctor answers
No connection.: If your son is depressed, especially if he is depressed to the point, he wants to hurt himself, he needs help from a psychologist or psychiatrist or family doctor now not next week or next month. ...Read more
What is the difference between allegra (fexofenadine) and Flonase for allergy relief -take one or both?
Flonase better: Allegra is an atihistamine and is helpful for itchiness, sneezing and a runny nose, not helpful for congestion. Flonase, an intranasal steroid covers all these symptoms plus congestion. Head to head studies comparing Flonase to antihistamines, singulair, (montelukast) or sudafed showed that Flonase beat them all. I usually suggest daily Flonase and adding an antihistamine on as needed or supplemental basis. ...Read more
Medical questions: Benadryl (diphenhydramine) is an antihistamine, good for allergies and to lessen the drainage during an upper respiratory infection. Sudafed is a decongestant, good for helping you breath through a stuffy nose from a cold, bad allergies or sinus problems. Sudafed can also raise blood pressure, and shouldn't be taken on a regular basis. ...Read more
Citrate vs. HCl: No real difference, both work in the same way and are likely to equivalent in all ways. ...Read more
Benadryl (diphenhydramine) and Sudafed: Benadryl (diphenhydramine) is an antihistamine (blocks the histamine receptor) and sudafed is a decongestant. Basically sudafed grabs a hold of the blood vessels and squeezes them down for a period of time. Hence the reason that rebound congestion and high blood pressure are attributed to this medicine. ...Read moreSee 1 more doctor answer
Metabolite: Clarinex (desloratadine) is des-loratadine and Claritin is loratadine. Clarinex (desloratadine) is the active metabolite of claritn. So (according to the manufacturer) you have the benefits of loratidine with minimal side effects. It is common in the pharmaceutical industry to use active metabolites or isomers of drugs. This potentially gives you a more active compound while minimizing the potential side effect. ...Read moreSee 1 more doctor answer
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