For usage in aviation of the USA, UK, Austria and Brasilia at http://infertilitypills.net/l/30411/wa44 . Tired of sneezing, runny nose and itchy eyes? Tired of sneezing, runny nose and itchy eyes? There is no significant clinical interaction, if Allegra is co-administered with drugs metabolizing in liver, such as Erythromycin and Ketokonasole.