Franova et al. revealed morin's bronchodilator, anti-inflammatory, and antitussive effects at 30 mg/kg in experimentally induced allergic asthma via reducing airway resistance, number of cough efforts, and the concentration of IL-4, IL-5, and IL-13 in the BALF of asthmatic guinea pigs compared to dexamethasone [107]. This evidence concerns the gene IL4 and allergic asthma.