A natural Vitamin E derivative is an innovative excipient - Yves Robin, Pharmaceutical Technology - January 2015
https://www.pixelmags.com/awrv1/#magazines/1367/issues/110846/pages/51
Abstract
Tocophersolan or d-α-tocopheryl polyethylene glycol succinate (TPGS) was developed 60 years ago as a water-soluble form of vitamin E. Its surfactant properties triggered the interest of drug formulation developers before it steadily moved into the toolbox of pharmaceutical drug-delivery innovators. The author gives an overview of TPGS, including its interesting properties, examples found in the literature, and a brief summary of the regulatory status and marketed formulations.