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US 5,308,621 AGranted
Ascorbic acid composition and transdermal administration method
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsReginald M. Taylor, David J. Wilson
Life of this patent
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Abstract
The present invention concerns a composition for topical application to deliver ascorbic acid by transdermal migration. The composition includes fine particulate ascorbic acids suspended in a pharmaceutically acceptable carrier. The invention also concerns methods of treatment, involving such a composition.
Claims7
A composition for use in transdermal administration of ascorbic acid to a subject;
- said composition comprising:
- (a) a carrier of a composition effective for topical application of the composition to a subject, to achieve transdermal delivery of ascorbic acid;
- said carrier being selected from the group consisting essentially of:
- glycerol;
- propylene glycol;
- polypropylene glycol;
- polyethylene glycol;
- ethanol;
- isopropanol;
- petroleum jelly;
- lanolin and mixtures thereof;
- and,
- (b) 1 to 60% by weight of ascorbic acid in suspension within the carrier;
- the ascorbic acid in suspension comprising:
- (i) fine particles of ascorbic acid predominantly sized below 20 microns.
12 more elements
Dependencies are inferred from the claim text.