Does benzalkonium chloride have side effects?
Does benzalkonium chloride have side effects? Nasal Zero Benzalkonium chloride may cause irritation or swelling inside the nose, especially if used for a long time. Long-term use may cause oedema of the nasal mucosa. Inhalation Zero Benzalkonium chloride may cause wheezing and breathing difficulties (bronchospasm), especially if you have asthma. Read more…