Negative side of nasal saline sprays: they can be harmful.
Berry
Yale J
YJ
D000281:Administration, Intranasal; D006801:Humans; D009297:Nasal Mucosa / Q000187:drug effects / Q000276:immunology; D009330:Nebulizers and Vaporizers; D009504:Neutrophils / Q000187:drug effects; D012965:Sodium Chloride / Q000008:administration & dosage* / Q000009:adverse effects*
D012965:Sodium Chloride