
Cetirizine is also used to treat itching and swelling caused by chronic urticaria (hives).

If you forget to take your Zyrtec as scheduled, take your missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose.

Older adults may need to take a lower than normal dose. Follow your doctor's instructions.

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