Improved quality of life among seasonal allergic rhinitis patients treated with olopatadine HCl nasal spray 0.4% and olopatadine HCl nasal spray 0.6% compared with vehicle placebo.

Seasonal allergic rhinitis (SAR) exerts a significant adverse impact on health-related quality of life (QoL) and productivity of those who suffer from it. Unfortunately, some therapies for SAR also have a negative impact. Therefore, it is important to scrutinize the influence of new SAR therapies on patients' QoL and ability to function.

Safety and efficacy of olopatadine hydrochloride nasal spray for the treatment of seasonal allergic rhinitis.

Background: A nasal spray containing the antiallergy agent olopatadine hydrochloride is being developed for the treatment of seasonal allergic rhinitis (SAR).

Objective: To evaluate the safety and efficacy of 2 concentrations of olopatadine nasal spray vs placebo in patients with SAR.

Methods: This was a multicenter, randomized, double-blind, placebo-controlled study.

Safety and efficacy of olopatadine hydrochloride nasal spray for the treatment of seasonal allergic rhinitis to mountain cedar.

Background: A nasal spray containing the antiallergy agent olopatadine hydrochloride is being developed for the treatment of seasonal allergic rhinitis (SAR) to mountain cedar.

Objective: To evaluate the safety and efficacy of 2 concentrations of olopatadine nasal spray vs placebo nasal spray in patients with SAR to mountain cedar.

Methods: This was a multicenter, randomized, double-blind, placebo-controlled study.