Preservation of nasal sprays.
Richards
D H
DH
D000281:Administration, Intranasal; D001548:Benzalkonium Compounds / Q000008:administration & dosage*; D014663:Nasal Decongestants / Q000008:administration & dosage*; D009297:Nasal Mucosa / Q000187:drug effects; D011310:Preservatives, Pharmaceutical / Q000008:administration & dosage*
D001548:Benzalkonium Compounds; D014663:Nasal Decongestants; D011310:Preservatives, Pharmaceutical