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Doctor insights on: What Is The Difference Between Zyrtec And Xyzal

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What is the difference between zyrtec and xyzal (levocetirizine)?

What is the difference between zyrtec and xyzal (levocetirizine)?

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 more

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Xyzal (Definition)

Levocetirizine is an antihistamine that is used to treat the symptoms of hay fever and allergies like runny nose, stuffy ...Read more


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Is there a difference between zyrtec and xyzal (levocetirizine)?

Is there a difference between zyrtec and xyzal (levocetirizine)?

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

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Xyzal (levocetirizine) the same as zyrtec?

Xyzal (levocetirizine) the same as zyrtec?

Close: Xyzal (levocetirizine) (levo-cetirizine) is the r-isomer, of zyrtec (cetirizine). Medications are usually a combination of r + s (called racemic). Typically only the r side contributes to the clinically meaningful action of the drug. So, the companies have been able to separate the active r side from the inactive s- side. This means it may be as or more effective at half the dose. ...Read more

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Is Xyzal unlikely to work for someone for whom Zyrtec does not work?

Is Xyzal unlikely to work for someone for whom Zyrtec does not work?

Worth a Trial: Both are second generation antihistamines and have the same mode of action. But these are different compounds and for some people swithing helps with their symptoms. It is worth trying.Xyzal is available by prescription and zyrtec is over the counter ...Read more

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Is Xyzal 100 times stronger than Zyrtec? I tried Zyrtec a few years ago and it had absolutely no effect on hives. Xyzal now is super effective.

NO: I wouldn't say Xyzal is "100 times stronger" than zyrtec. Xyzal is derived from zyrtec. Different antihistamines have a different effect on patients. If you feel that xyzal (levocetirizine) works better than zyrtec (cetirizine), then stay on xyzal. ...Read more

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VitC 2000mg. Calcium 220 mg. Oysco 1000/500D.Biotin 6000mcg. VitA10, 000.Plaqunil. Zyrtec. Singular. Xyzal. Gabapntin. Safe?

VitC 2000mg. Calcium 220 mg. Oysco 1000/500D.Biotin 6000mcg. VitA10, 000.Plaqunil. Zyrtec. Singular. Xyzal. Gabapntin. Safe?

Hard to say: You are on two medications (Plaquinil and Gabapentin) which can be associated with side effects and thus the question whether is safe or not depends on the perspective related to risk/benefit ratio. However there is no evidence that vit A or even vit C supplements are beneficial and thus I would consider stopping these two. ...Read more

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Is it OK to take 180 mg Allegra in AM and 10m Zyrtec AND Xyzal (levocetirizine) at dinner? Allergist said to take TWO Allegra, but I'm worried it's too much

Is it OK to take 180 mg Allegra in AM and 10m Zyrtec AND Xyzal (levocetirizine) at dinner? Allergist said to take TWO Allegra, but I'm worried it's too much

Mixing antihistamine: Generally, it's best to follow one's doctor's instructions. If not wanting to take Allegra twice a day, and wanting to add a different antihistamine such as Zyrtec or Xyzal (levocetirizine), (levocetirizine) it is probably enough to take Zyrtec or Xyzal (levocetirizine) (one of them instead of both of them). Zyrtec and Xyzal (levocetirizine) are very similar. The makers of Xyzal (levocetirizine) say it is more effective than Zyrtec, but they are similar drugs. ...Read more

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Allergic rhinitis and sinusitis. Went from loratadine claratin To Zyrtec To finally Xyzal (levocetirizine). The first 2 meds didn't help much. Is Xyzal (levocetirizine) more effective?

Allergic rhinitis and sinusitis. Went from loratadine claratin To Zyrtec To finally Xyzal (levocetirizine). The first 2 meds didn't help much. Is Xyzal (levocetirizine) more effective?

Allergy treatment: Basically, claritin, loratidine, zyrtec, allegra and xyzal (levocetirizine) are all 2nd generation antihistamines. If your symptoms are not controlled on these, you may need to be given intranasal steroids like flonase, nasonex or other treatments like singular, and also trying regular nasal saline. If still no improvement, time to see the allergist. ...Read more

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Can Flonase be used 2x a day once am & once pm for nasal drip/allergies? If so, for how long can I continue this? Also on Xyzal, (levocetirizine) Zyrtec, & Singulair.

Can Flonase be used 2x a day once am & once pm for nasal drip/allergies? If so, for how long can I continue this? Also on Xyzal, (levocetirizine) Zyrtec, & Singulair.

See below.: Flonase is usually taken once per day, unless your doctor prescribing it has told you otherwise. Also, both Xyzal (levocetirizine) and Zyrtec are long-acting antihistamines, also usually taken only once per day. You should discuss all of your medications with your doctor and they can advise you of the best way to take your allergy medications. ...Read more

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Is zyrtec and levocetirizine the same medications?

Is zyrtec and levocetirizine the same medications?

Levo is more pure: Zyrtec contains both levocetirizine and an inactive mirror-image counterpart. Thus mg for mg, levocetirizine is more potent. ...Read more

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What is the difference between zyrtec and Claritin (loratadine) medicines?

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 more

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What is the difference between zyrtec and allegra (fexofenadine) d allergy?

What is the difference between zyrtec and allegra (fexofenadine) d allergy?

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

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What's the difference between zyrtec and allegra (fexofenadine)?

What's the difference between zyrtec and allegra (fexofenadine)?

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

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I understand xyzal (levocetirizine) and dallergy are both antihistamines, but what is the difference between the two?

Side effects: Dallergy (http://www. Drugs. Com/cdi/dallergy. Html) is a brand name product composed of 2 different drugs, one of which is a 1st generation antihistamine, which can make you sleepy among other side effects, plus a decongestant, which can raise your blood pressure. Xyzal (http://www. Drugs. Com/xyzal. Html) is a brand name for levocetirizine which is a left mirror image of zyrtec which contains l&r. ...Read more

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Is there a difference between alegra and zyrtec and claritin (loratadine)?

Is there a difference between alegra and zyrtec and claritin (loratadine)?

Most allergists: Would recommend zyrtec and Allegra over claritin (loratadine). Zyrtec makes a few people sleepy, but may be slightly stronger than allegra. ...Read more

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Difference between polaramine, zyrtec and claritin (loratadine)?

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 more

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Which is better for nasal allergies: levocetirizine or cetirizine hcl?

Which is better for nasal allergies: levocetirizine or cetirizine hcl?

Whichever works: For you would be the best to use, although it treats only one aspect of the disease, nasal itching and runny nose, won't affect congestion, also during an allergy season you need to take it on regular, not on as needed basis, in the end if you are not controlled you need to see an allergist ...Read more

Dr. Heidi Fowler
102 Doctors shared insights

Levocetirizine (Definition)

Levocetirizine is an antihistamine that is used to treat the symptoms of hay fever and allergies like runny nose, stuffy ...Read more


Dr. John Chiu
569 Doctors shared insights

Cetirizine (Definition)

Ceftirizine is the generic name of an antihistamine previously marketed under the ...Read more