Analgesic compositions

The invention provides a topical analgesic composition comprising an oil-in-water emulsion containing about 5% to about 12% by weight of ibuprofen and about 60% to about 90% by weight of water, the oil phase of the emulsion consisting essentially of emollient constituents that do not dissolve the ib...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHEN, GLORIA YOSHIKO, AGASIM, GARY ROBERT, BLANK, ROBERT GEORGE, MODY, DHIRAJ SHANTILAL
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:The invention provides a topical analgesic composition comprising an oil-in-water emulsion containing about 5% to about 12% by weight of ibuprofen and about 60% to about 90% by weight of water, the oil phase of the emulsion consisting essentially of emollient constituents that do not dissolve the ibuprofen to any great extent at a pH of 4-7, the composition having a pH of about 4 to about 7.2 such that the ibuprofen is suspended in substantially solid crystalline form and the ibuprofen which is dissolved is partially in the neutral or non-charged state. The invention also includes a process for preparing this composition.