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.
Both Zyrtec and Zyrtec-D are over-the-counter antihistamines that contain cetirizine. They function by reducing the chemical histamine in the body, which can cause symptoms of sneezing, itching, watery eyes and runny nose upon exposure to an allergen.