Yes — Zyrtec (cetirizine) is generally considered safe to take during pregnancy , including all trimesters, but it’s still best to check with your OB-GYN or midwife before starting it, especially if you’re in the first trimester or taking other medicines.

Quick Scoop

  • What it is: Zyrtec is a second-generation antihistamine used for allergy symptoms like sneezing, runny nose, and itchy eyes.
  • Pregnancy safety: Major references say it’s generally safe in pregnancy and not known to increase birth-defect risk.
  • Main downside: It can cause drowsiness , which may be extra noticeable during pregnancy.

What to know

If your allergies are mild, non-medicine options may help first, like avoiding triggers, using saline rinses, or keeping windows closed on high-pollen days. If symptoms are bothering you a lot, Zyrtec is one of the commonly used options that doctors may recommend.

When to be careful

  • First trimester: It’s still generally considered acceptable, but many clinicians prefer you confirm with your prenatal provider first.
  • Combination products: Avoid anything that mixes cetirizine with a decongestant unless your doctor says it’s okay, since decongestants are a separate issue.
  • If it makes you sleepy: Don’t drive or do anything that needs alertness until you know how it affects you.

Best next step

If you want, I can also give you:

  • a pregnancy-safe allergy medicine list , or
  • a simple “what’s safe / what to avoid” chart for antihistamines in pregnancy.