pH reducing formulation and delivery system for a tampon
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United States of America Patent
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Nov 21, 2006
Issued Date -
N/A
app pub date -
May 21, 2003
filing date -
Aug 31, 2000
priority date (Note) -
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Abstract
A formulation effective in reducing the pH in a menstruating vagina or in a tampon inserted therein to below pH 5.5, comprising (a) 3 80% by weight of a solid organic acid polymer; (b) 92 15% by weight of a solid organic acid; and (c) 5 30% of a wetting agent. Also disclosed is a delivery system for releasing an active agent comprising: (a) a deposition comprising the active agent; and (b) a polymeric support on which the deposition is deposited. The delivery system is especially useful in a catamenial tampon for insertion in a human vagina which comprises (a) an inner core comprising an absorbent material; (b) an outer layer comprising a liquid permeable material; and (c) the delivery system.
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