ARS Pharmaceuticals, Inc.
This is a Phase 2b, outpatient, single-dose, randomized, double blind, placebo-controlled, three period crossover study that will consist of a screening period and three blinded treatment periods. Subjects enrolled will have CSU with a history of moderate to severe acute exacerbations (or flares).
Inclusion Criteria: * Is a male or female between the ages of 18 and 65 years, inclusive. * Has been clinically diagnosed with CSU and experiences an acute flare of moderate to severe urticaria symptoms (itch and hive severity UAS score ≥ 2) approximately 1-2 times a month or every other month consistently during the past year while on a chronic treatment. * Has been on a daily chronic treatment for ≥ 6 weeks. * Is willing to use a smartphone study application to record study assessments and AEs. * Has body weight more than 15 kilogram (kg). * Has no medical history of clinically significant…
Placebo solution nasal spray containing no active drug
0.5 mg epinephrine per spray
1 mg epinephrine per spray
Arctuva estimate
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