Abstract: A device for the transdermal administration of Buprenorphine, which comprises an adhesive matrix, a backing layer and release liner, where such adhesive matrix supports a non-crosslinked adhesive acrylic polymer without carboxylic functionality, Buprenorphine Base, Levulinic Acid and Isopropyl Myristate.

Abstract: A transdermal delivery system (TDS) for the transdermal administration of rotigotine, comprising an adhesive matrix layer, a backing film and release liner, wherein the adhesive matrix comprises rotigotine, an adhesive polymer and a copolymer of polyethylene glycol, polyvinyl caprolactam and polyvinyl acetate. Preferentially, the adhesive polymer is the block styrene-isoprene-styrene (SIS).

Abstract: The present invention pertains generally to the field of transdermal drug delivery. More specifically, the invention relates to a device for the transdermal delivery of an alkaline pharmaceutically active compound that is susceptible to degradation in its free base form (e.g., rivastigmine) that comprises an adhesive matrix layer, a backing layer and a release or protective layer, wherein the adhesive matrix layer comprises said pharmaceutically active compound, triethylcitrate and hydrochloric acid. The invention also relates to methods of preparing such devices.

Abstract: A device for the transdermal delivery of a pharmacologically active substance has first and second superimposed mutually contacting adhesive layers (2, 3). The first layer (3) is in use brought into contact with the skin. The active substance is dissolved in both layers, the affinity of the first layer for the active substance being between about 1.15 and about 10 times lower than that of the second layer. The percent saturation of the active substance in both the layers is the same and is less than 100%. The first layer has a greater thickness than the second layer. The device is simple and can provide stable delivery over a long period.

Abstract: A steroid is used as an additive in manufacture of a transdermal drug delivery device, to act as a crystallization inhibitor inhibiting crystallization, during storage of the device, of an active drug in the form of a hormone which has a pharmaceutical or physiological effect in use of the device. The crystallization-inhibiting steroid is present in the device in an amount insufficient to provide significant pharmaceutical or physiological effect in use of the device.

Abstract: The present invention relates to a transdermal delivery device for estradiol where the metabolic degradation of estradiol to estrone during permeation is inhibited by another substance in the transdermal delivery device. The transdermal device also includes a compound for enhancing the rate of estradiol permeation. The transdermal delivery device containing the inhibitor and enhancer can also be used to simultaneously deliver both estradiol and a progestin at therapeutic rates.