Efficacy of Bilastine, Dextromethorphan, and Phenylephrine Syrup in Patients With Dry Cough: A Phase 3 Randomised Trial.

Background Cough in common cold is often associated with rhinorrhoea and nasal congestion, requiring treatment with a cough suppressant, decongestant, and antihistamine. Bilastine is a non-sedating antihistamine, a preferred option over sedating antihistamines. A combination of bilastine, dextromethorphan, and phenylephrine is expected to provide non-sedating treatment for cough associated with a common cold or allergy.