
Zyrtec tablets, chewable tablets, and Children's Hives Relief syrup are approved for use in children as young as six years old. Children's Zyrtec Allergy syrup is approved for use in children age two years and older.

Avoid drinking alcohol. It can increase some of the side effects of cetirizine.

Available as a prescription drug since 2001, Zyrtec-D is now approved as an over-the-counter drug for the relief of symptoms due to hay fever or other upper respiratory allergies such as runny nose; sneezing; itchy, watery eyes; itchy nose or throat; and nasal congestion.

|