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Vistaril, Atarax
Antihistamine • First-generation antihistamine / Anxiolytic
H1 antihistamine with anticholinergic and CNS depressant properties
Drug Class
Antihistamine
Subclass
First-generation antihistamine / Anxiolytic
Half-life
20 hours
Time for plasma concentration to decrease by 50%
Protein Binding
93%
Fraction bound to plasma proteins
Therapeutic Index
Wide
Margin between therapeutic and toxic doses