Formulation

Aqueous formulations suitable for intranasal administration comprise buprenorphine or a physiologically acceptable salt or ester thereof and (a) a pectin having a degree of esterification of less than 50%, (b) chitosan and a polyoxyethylene-polyoxypropylene copolymer (poloxamer) or (c) chitosan and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HAYES ANN G, WATTS PETER J, BIRCH PHILIP J, CASTILE JONATHAN D
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Aqueous formulations suitable for intranasal administration comprise buprenorphine or a physiologically acceptable salt or ester thereof and (a) a pectin having a degree of esterification of less than 50%, (b) chitosan and a polyoxyethylene-polyoxypropylene copolymer (poloxamer) or (c) chitosan and hydroxypropylmethylcellulose. Such formulations can induce rapid and prolonged analgesia when delivered intranasally to a patient. The buprenorphine or buprenorphine salt or ester may be delivered to the bloodstream to produce within 30 minutes a therapeutic plasma concentration of buprenorphine, Cther, of 0.2 ng/ml or greater which is maintained for a duration Tmaint of at least 2 hours.