What is the difference between Xyzal and Zyrtec? What is the Levo?

Question is Closed Report Mark as Favorite

Answers (1)

9 Nov 2009

Xyzal (levocetirizine) is the R-enantiomer of cetirizine, and is thus as such not a new compound, but part of an already known preparation. Cetirizine consists of equal parts R- and S-enantiomer, but several studies have shown that the pharmacological effect – a selective inhibitory effect on the peripheral H1 receptors – is induced by the R-enantiomer alone.

Xyzal tablets contain 5 mg levocetirizine, which corresponds to the content of active R-enantiomer in one 10 mg cetirizine tablet.

http://www.irf.dk/en/reviews/xyzal_levocetirizine.htm

Votes: +0
wvdustbunny 10 Nov 2009

So, in layman's terms, Xyzal is only one part of zyrtec. So, if Xyzal works for me, then zyrtec should also work and zyrtec is over the counter, right? Thank you for your help.

Further Information

Search for questions

Still looking for answers? Try searching for what you seek or ask your own question.

Similar questions

Zyrtec-D 12 Hour - Should I take Zyrtec-D with cheratussin Guaifenesin/codeine?

My doctor prescribed cheratussin ac for coughing at night, also have sinus congestion which Zyrtec D was recommended. Have recently undergone surgury ...

1 answer 2 Dec 2010

How long before I see a difference? Day, week, month?

I was prescribed this medication for allergies. I am undergoing Allergy Therapy right now. My running nose and postnasal drip worsen after the ...

2 answers 18 Jan 2011

I have swelling of the lips, eyes get puffy,or I break out in hives. What can I use to stop this?

I have used samples of Xyzal and it works. Anything i eat may trigger it. I can eat it one time and nothing happens, then the next time it will. I ...

5 answers 2 Jun 2011

Zyncet zyrtec and xyzal are the same genric drug ?

can we use them for same purpose ?

1 answer 15 Jan 2013

Does xyzal lose its efficacy after prolonged use?

Xyzal was the only thing that controlled my chronic cough. After several years of use it seemed to lose its efficacy, so my Dr. prescribed something ...

1 answer 4 Apr 2014