Change from baseline averaged over study Day 1 through study Day 15 was calculated for Total Nasal Symptom Score, based on participant diaries. Participants scored 4 symptoms (rhinorrhea, stuffiness, itching, sneezing) in their diaries using the following scale: 0=none, 1=mild, 2=moderate, 3=severe. The Total Nasal Symptom Score was the sum of the 4 individual scores (range=0-12; higher score indicating more frequent/severe nasal symptoms.) Change from baseline was the 15-day average score minus the baseline score. Scores were recorded twice daily, in the morning (AM) and night (PM). Average AM/PM scores were first calculated separately, then averaged together to obtain the 15-day average score. Baseline score was an average of the 3 AM scores and 3 PM scores preceding treatment. Negative changes indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available diary data.

Change from baseline at Day 4 was calculated for the Total Nasal Symptom Score, as assessed by the physician. The Total Nasal Symptom Score was a composite of the following symptoms: rhinorrhea, nasal stuffiness, nasal itching, and sneezing scores. The physician scored each symptom during the study visit on the following scale: 0=none, 1=mild, 2=moderate; and 3=severe. The composite score ranged from 0-12. Change from baseline = visit score - baseline score (Day 1 visit). A negative change from baseline score indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available Day 4 visit data for Total Nasal Symptom Score.

Change from baseline at Day 15 was calculated for the Total Nasal Symptom Score, as assessed by the physician. The Total Nasal Symptom Score was a composite of the following symptoms: rhinorrhea, nasal stuffiness, nasal itching, and sneezing scores. The physician scored each symptom during the study visit on the following scale: 0=none, 1=mild, 2=moderate; and 3=severe. The composite score ranged from 0-12. Change from baseline = visit score - baseline score (Day 1 visit). A negative change from baseline score indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available Day 15 visit data for Total Nasal Symptom Score.

Change from baseline at Day 4 was calculated for the Overall Condition of Seasonal Allergic Rhinitis, as assessed by the physician. The physician scored their overall condition on study Day 4 on the following scale: 0=none, 1=mild, 2=moderate; and 3=severe. A higher value indicated greater severity of symptoms. Change from baseline = visit score - baseline score (Day 1 visit). A negative change from baseline score indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available Day 4 data for Overall Condition of Seasonal Allergic Rhinitis (physician evaluated).

Change from baseline at Day 15 was calculated for the overall condition of seasonal allergic rhinitis, as assessed by the physician. The physician scored their overall condition on study Day 15 on the following scale: 0=none, 1=mild, 2=moderate; and 3=severe. A higher value indicated greater severity of symptoms. Change from baseline = visit score - baseline score (Day 1 visit). A negative change from baseline score indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available Day 15 data for Overall Condition of Seasonal Allergic Rhinitis (physician evaluated)

The overall condition of seasonal allergic rhinitis was evaluated by the participant on Day 4, based on the following scale: 0=none, 1=mild, 2=moderate; and 3=severe. A higher value indicated greater severity of symptoms. Change from baseline = visit score - baseline score (Day 1 visit). A negative change from baseline score indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available Day 4 data for Overall Condition of Seasonal Allergic Rhinitis (participant evaluation).

The overall condition of seasonal allergic rhinitis was evaluated by the participant on Day 15, based on the following scale: 0=none, 1=mild, 2=moderate; and 3=severe. A higher value indicated greater severity of symptoms. Change from baseline = visit score - baseline score (Day 1 visit). A negative change from baseline score indicated a decrease in symptom severity.

All randomized participants who completed at least one valid post-baseline visit and had available Day 15 data for Overall Condition of Seasonal Allergic Rhinitis (participant evaluation)

Response to therapy was assessed by evaluating the participant's relief of nasal symptoms at Day 4. The physician evaluated the participant's response using the following 5-point scale: 1=complete relief, 2=marked relief, 3=moderate relief, 4=slight relief, and 5=no relief. The scores were averaged across each treatment group, with a lower score indicating a greater response to therapy and an improvement in nasal symptoms.

All randomized participants who completed at least one valid post-baseline visit and had available Day 4 data for Response to Therapy (physician evaluation).

Response to therapy was assessed by evaluating the participant's relief of nasal symptoms at Day 15. The physician evaluated the participant's response using the following 5-point scale: 1=complete relief, 2=marked relief, 3=moderate relief, 4=slight relief, and 5=no relief. The scores were averaged across each treatment group, with a lower score indicating a greater response to therapy and an improvement in nasal symptoms.

All randomized participants who completed at least one valid post-baseline visit and had available Day 15 data for Response to Therapy (physician evaluation).

Response to therapy was evaluated by participants and based upon their status scored at Day 4. Participants evaluated their response to therapy using the following 5-point scale: 1 = Complete Relief, 2 = Marked Relief, 3 = Moderate Relief, 4= Slight Relief, and 5 = Treatment Failure. The scores were averaged across each treatment group, with a lower score indicating a greater response to therapy and an improvement in nasal symptoms.

All randomized participants who completed at least one valid post-baseline visit and had available Day 4 data for Response to Therapy (participant evaluation).

Response to therapy was evaluated by participants and based upon their status scored at Day 15. Participants evaluated their response to therapy using the following 5-point scale: 1 = Complete Relief, 2 = Marked Relief, 3 = Moderate Relief, 4= Slight Relief, and 5 = Treatment Failure. The scores were averaged across each treatment group, with a lower score indicating a greater response to therapy and an improvement in nasal symptoms.

All randomized participants who completed at least one valid post-baseline visit and had available Day 15 data for Response to Therapy (participant evaluation).