Zyrtec-D Overdose (cetirizine and pseudoephedrine) is a medication approved to treat allergies. Allergy Shots. Allegra. Astelin. irregular heart rhythm arrhythmias. Seizures. Coma. The most serious effects of a Zyrtec-D overdose appear to be caused by the pseudoephedrine component.
Zyrtec Cetirizine - Side Effects, Dosage, Interactions It contains two separate medications: pseudoephedrine (a nasal decongestant) and cetirizine (an antihistamine). A Zyrtec cetirizine is a second generation antihistamine. Another similar drug would be fexofenadine Allegra or loratadine Claritinusing Zyrtec cetirizine and notify your doctor if you experience any of the following serious side effects including fast irregular heartbeat, weakness.
Zyrtec, Cetirizine HCI, Reactine. Allergy Relief. Zertec, Zyrtec is the brand name of cetirizine, an over-the-counter (OTC) antihistamine used to treat cold and allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Zyrtec. TAKE THIS MEDICINE if you have narrow-angle glaucoma, difficulty urinating, very hh blood pressure, severe heart or blood vessel disease e.g. coronary artery disease, or if you have experienced serious side effects in the past with decongestants e.g. irregular heart rhythm.