Have to blow my nose every couple of minutes.
Zyrtec is a fast acting OTC allergy medication that begins to take affect in as little as one hour after taking the first dose and works for up to 24 hours.
- Zyrtec Information for Consumers
- Zyrtec Information for Healthcare Professionals (includes dosage details)
- Side Effects of Zyrtec (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.