A Prospective, Interventional, Randomized, Double-Blinded, Placebo-Controlled, Monocentric Clinical Study to Evaluate the Efficacy and Safety of <i>Alkalihalobacillus clausii</i> 088AE in Resolution of Acute Allergic Rhinitis Symptoms

<i>A. clausii</i> 088AE supplementation improved the clinical symptoms in patients with AR. At the administered oral dose, <i>A. clausii</i> 088AE was found to be safe and tolerable in adult subjects with acute allergic rhinitis. <i>A. clausii</i> 088AE can be recommended to support the clinical pathophysiology of AR-related symptoms of the host. Besides, clinical studies with a larger population, multiple centres, and prolonged intervention periods are necessary to validate the significance of this study further.