Efficacy and Safety of Fixed Dose Combination GSP 301 Nasal Spray (NS) in the Treatment of Seasonal Allergic Rhinitis (SAR)

Inclusion Criteria: 1. Aged 12 years and older inclusive of either sex. 2. Documented clinical history of SAR (for at least 2 years preceding the Screening Visit \[Visit 1\]) with exacerbations (clinical evidence of active symptoms) during the spring allergy season (tree/grass pollen) 3. A 12-hour reflective TNSS ≥ 8 out of a possible 12 and a congestion score of ≥ 2 for the AM assessment at the Screening Visit (Visit 1). Exclusion Criteria: 1. Pregnant or lactating women. 2. Plans to travel outside the known pollen area for the investigative site for \> 24 hours during the last 7 days of run in period. 3. History of anaphylaxis and/or other severe local reaction(s) to skin testing. 4. History of positive test for HIV, Hepatitis B or Hepatitis C infection. 5. Documented evidence of acute or significant chronic sinusitis or chronic purulent postnasal drip. 6. Subjects with an active pulmonary disorder or infection. 7. Subjects with posterior subcapsular cataracts or glaucoma