Antazoline
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| Trade names | Vasocon-a |
| AHFS/Drugs.com | Micromedex Detailed Consumer Information |
| Routes of administration | Topical (nasal, eye drops) |
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Antazoline is a 1st generation antihistamine with anticholinergic properties used to relieve nasal congestion and in eye drops, usually in combination with naphazoline, to relieve the symptoms of allergic conjunctivitis.[1] To treat allergic conjunctivitis, antazoline can be combined in a solution with tetryzoline.[2] The drug is a Histamine H1 receptor antagonist:[3] selectively binding to but not activating the receptor, thereby blocking the actions of endogenous histamine and subsequently leading to the temporary relief of the negative symptoms brought on by histamine.
A large study on people 65 years old or older linked the development of Alzheimer's disease and other forms of dementia to the "higher cumulative" use of first-generation antihistamines, due to their anticholinergic properties.[4]