Zyrtec and Zyrtec -D are one of the many medications that allow easing many symptoms of allergy that cannot be treated by just one conventional antihistamine. The generic name of Zyrtec is Cetirizine for immediate release, while the generic name of Zyrtec-D Cetirizine plus pseudoephedrine for extended-release.
Zyrtec D also contains ingredients magnesium stearate and Hypromellose, while Zyrtec, on the other hand, only contains Cetirizine. Zyrtec D is suggested for allergic rhinitis, nasal congestion, sneezing, and rhinorrhea.
At the same time, Zyrtec is indicated for allergic rhinitis, nasal pruritus, chronic idiopathic urticaria, and non-nasal symptoms, which are correlated with conjunctivitis. The manufacturer of Zyrtec D is GlaxoSmithKline, while the manufacturer of Zyrtec is Duncan.