Zyrtec R, Zyrtec D & Zyrtec. What's The Difference?
Zyrtec_R vs D | Introducing Zyrtec to a new colleague? Here's a tip to help you pick the Zyrtec that best targets your allergy symptoms! ✓ Choose Zyrtec-R for Rapid... | By
Zyrtec-D Pill Images - What does Zyrtec-D look like? - Drugs.com