Bilazest 20mg (10 Tablets) - Non-Sedating Allergy Relief - AGPBilazest 20mg: Find Relief from Allergies Without Drowsiness . is a non sedating antihistamine that provides fast and effective relief from allergy symptoms. Its active ingredient, bilastine, works by blocking histamine, a substance your body releases during an allergic reaction. it can help relieve symptoms of: Seasonal allergic rhinitis (hay fever): Sneezing, itching, runny nose, nasal congestion, and watery eyes. Chronic spontaneous urticaria