Okeechobee County School District Perseverance, Respect, Integrity, Dependability, Ethics
A: Zyrtec-D is a combination tablet of an antihistamine (Zyrtec) and a decongestant (pseudoephedrine). Antihistamines help with sneezing, runny noses and drainage. Decongestants help relieve pressure and pain in the sinuses. Zyrtec or the antihistamine portion has a potential to cause some drowsiness and dry mouth. Sudafed (pseudoephedrine) can cause difficulty sleeping, nausea, and loss of appetite.
They also found that Allegra and Zyrtec were comparable in relieving the symptoms of seasonal allergies. Whereas drowsiness was a side effect of Zyrtec, no major side effects were noted with Allegra. Patients also experienced less fatigue, nausea, and throat irritations with Allegra. However, in the U.S., Allegra is only available in 60 mg capsules taken twice a day and not in the 120 mg or 180 mg once-daily capsules.