| abstract |
The present invention provides methods and compositions for the sustained delivery of beneficial agents. In certain embodiments, the invention provides compositions comprising a surfactant, a solvent, and a beneficial agent, wherein upon exposure to a hydrophilic environment, the surfactant and solvent form a viscous gel and the beneficial agents is dispersed or dissolved in the gel. In other embodiments, the invention provides compositions comprising a surfactant, a solvent, a hydrophilic media, and a beneficial agent, wherein the surfactant solvent, and hydrophilic media form a viscous gel and the beneficial agent is dispersed or dissolved in the gel. |