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.
On some occasions, however, when you have taken Zyrtec in the 24 hours, you can still get hives, so it is safe to take a dose of Benadryl. Benadryl does cause sedation, so please be careful if you need to drive.