Were you looking for information about Zyrtec-D? Zertec-D is a common misspelling of Zyrtec-D.
Zyrtec-D® is drug used to treat several allergy symptoms, including watery eyes, itchy throat, and nasal congestion. This over-the-counter drug contains an antihistamine (cetirizine) and a decongestant (pseudoephedrine). Available in tablet form, Zyrtec-D is taken twice a day, with about 12 hours in between doses. Common side effects include insomnia, dry mouth, and fatigue.
(Click Zyrtec-D for a closer look at how the drug works, when the dosages should be taken, and why Zyrtec-D is kept behind the counter at pharmacies.)