Efficacy and Safety of Xylometazoline Based Nasal Sprays with and Without Lysozyme in The Treatment of Acute Nasopharyngitis
Background: Acute nasopharyngitis is a common condition usually accompanied by nasal congestion. The aim of this study was to compare efficacy and safety of the spray containing xylometazoline and lysozyme with spray containing only xylometazoline in the treatment of acute nasopharyngitis.Methods: Prospective, comparative, post-marketing study was performed on subjects with acute nasopharyngitisdivided into xylometazoline+lysozyme or xylometazoline nasal spray groups. Data collection was performed at the baseline before and 30 minutes after the therapy application and seven days after baseline.Main findings: Out of 173 included subjects, 59 were in the xylometazoline+lysozyme and 114 in the xylometazoline group. In both groups nasal patency was significantly improved 30 minutes after the therapy application (p<0.001). In the xylometazoline+lysozyme group all subjects had nasal decongestion within 20 minutes and this was significantly shorter (p=0.037) compared to xylometazoline group where 16 subjects (14%) needed 20 to 120 minutes for nasal decongestion. All adverse events were mild and there was no significant difference in the number of adverse events between the groups.Principal conclusions: Nasal sprays containing xylometazoline with or without lysozyme were effective and safe in the treatment of acute nasopharyngitis. Nasal spray containing xylometazoline with lysozyme showed a faster effect with significantly shorter time to nose decongestion. All recorded adverse events were mild and there was no difference between the groups in the number of recorded adverse events. Key words: nasopharyngitis, nasal obstruction, lysozyme, xylometazoline,nasal sprays