I had 33 zyrtec (cetirizine) is that dangerous?

Overdose: As with any medication, it is possible to overdose on zyrtec (cetirizine). While symptoms will vary, based on certain factors, reported symptoms include restlessness, irritability, and drowsiness. If you believe you have taken a zyrtec overdose, please contact poison control or go to the nearest emergency department. Treatment may involve pumping the stomach or treating any symptoms that occur as a result of the overdose.

Overdose: If this was a suicide attempt you should seek help from a psychotherapist or psychiatrist after you recover from overdose.