TOPICAL COMPOSITION FOR TREATING PAIN

摘要

Topical compositions having as the active ingredient a hydrophilic material, such as a polyalkylene oxide homopolymer or copolymer, and methods of use, have been developed for the amelioration or prevention of pain or the sequelae of pain. The composition may be in the form of a cream, gel, lotion, spray, foam, paste, patch, suspension or dispersion. In the preferred embodiment, the formulation is a gel. The composition may contain a penetration enhancer, most preferably one with membrane disruptive properties. In one embodiment, the compositions are incorporated onto or into disposables such as hemorrhoid wipes, gauze, sponge, bandages, and wraps; mouth guards, dental trays; needles or catheters; adult diapers; gloves, socks or wrist bands, for ease of application. The composition is applied topically to a site at or adjacent to a painful region. The composition is reapplied as necessary. Pain relief is typically obtained within minutes and lasts for periods of variable duration ranging from minutes to several hours and even, in some cases, days. The composition is variably effective to treat visceral, somatic and neuropathic pain both acute and chronic as well as muscle pain and stiffness and joint pain and stiffness.