Levocetirizine is called a non-drowsy antihistamine; however, it can still cause drowsiness in a few people.
Does levocetirizine cause sedation?
Conclusion: Levocetirizine has modest sedative effects with a risk ratio of 1.67 when compared with placebo. The sedative effects observed for levocetirizine are not different from other second-generation antihistamines.
Which is safer cetirizine or levocetirizine?
Previous research suggested that levocetirizine is less sedating than cetirizine, and that 2.5 mg of levocetirizine is equivalent to 5 mg of cetirizine. levocetirizine is the R-enantiomer of cetirizine, and the investigators hypothesized that it would be more potent.
How long does levocetirizine take to work?
Levocetirizine dihydrochloride 5 mg was found to have an onset of action 1 hour after oral intake. Onset of action was also assessed from the daily recording of symptoms in the evening before dosing in the allergic rhinitis trials. In these trials, onset of effect was seen after 1 day of dosing.
What allergy Med works the fastest?
Zyrtec is a renowned antihistamine thats known for performing faster (“starts working at hour 1”) than some of its competitors. This makes it exceptionally useful if youre desperate for quick relief from common symptoms of allergic rhinitis (also known as hay fever), like a runny nose and watery eyes.