Combinations of a first generation antihistamine for a quick onset with a maintenance dosage amount of a second or third generation antihistamine, along with an additional active agent such as a decongestant, a cough suppressant (an antitussive), a leukotriene receptor antagonist, a 5-lipoxygenase inhibitor, a bronchodilator, an expectorant, or a combination thereof, are disclosed. Methods of using such combinations by concomitant administration, either in the form of a single composition or multiple compositions, are further disclosed.