For patients with COVID-19-related olfactory dysfunction (OD), the clinical benefit of theophylline added to saline nasal irrigation (SNI) is inconclusive, according to a study published online July 7 in JAMA Otolaryngology-Head & Neck Surgery. Shruti Gupta, M.D., from Washington University School of Medicine in St. Louis, and colleagues examined the efficacy and safety of theophylline versus...
