This article is the second of a two-part series on allergic rhinitis (AR). Treatments for AR are now widely available in both prescription and over-the-counter form. The medication therapies include antihistamines, decongestants, leukotriene receptor antagonists, cromolyn sodium, and immunotherapy. Corticosteroids are also used via nasal inhalants. Treatment for seasonal AR is recommended to begin several weeks before the onset of allergy season and continue for several weeks after it ends, while perennial AR should be treated year-round. Although many treatments for AR are effective in abating primary symptoms, they may induce significant side effects (particularly sedation) that impact attention, arousal, and learning. This article reviews the efficacy and concomitant side effects of two of the more common treatments for AR--antihistamine therapy and corticosteroid therapy--and concludes with implications for school psychologists, who are often at the nexus of students' learning, behavior, and health issues while coping with AR. (Contains 1 table.) [For Part I, see EJ899117.]