Zyrtec Plus is a combination medication containing 5 mg cetirizine dihydrochloride and 120 mg pseudoephedrine hydrochloride. This prescription medication comes in a pack of 14 tablets and is manufactured by GSK for treating allergy symptoms with nasal congestion. As this is a prescription medication, it should only be taken under the direction of a healthcare provider. The combination of cetirizine (an antihistamine) and pseudoephedrine (a decongestant) helps relieve multiple allergy symptoms. Always follow prescribed dosage instructions and read the medication guide for potential side effects and drug interactions.