Question: what is the difference between zyrtec d and claritin d?
Answer: Zyrtec D (Cetirizine / Pseudoephedrine) Treats allergies and clears up nasal congestion. Claritin-D (loratadine / pseudoephedrine) relieves allergies and congestion without causing daytime sleepiness but it can keep you up at night. Relieves congestion and allergy symptoms.