Can i take equate daytime cold and flu and cetirizine together ?

Cold and flu meds: The product contains dextromethorphan (cough suppressant), acetaminophen (pain reliever) + phenylephrine ( weak decongestant). These compounds are safe to take with cetirizine, an antihistamine(AH). But AH are not valuable for respiratory infections, because they dry secretions+ lead to secondary or longer bacterial infections. Use AH for allergies or itchy skin, not ear or nose infections.