Coldi B medicine contains the active ingredient oxymetazolin, has the effect of constricting the nasopharyngeal mucosa, reducing the secretion of nasal mucosa, so it is used in the treatment of symptoms of runny nose, stuffy nose in sinusitis, flu, nasopharyngitis and runny nose. seasonal. Let's learn the uses and notes when using Coldi-B nasal spray through the article below.