The present invention provides a compositions and methods for the treatment of cancer, including pancreatic cancer, breast cancer and melanoma, in a human patient. The methods and compositions of the present invention employ curcumin or a curcumin analogue encapsulated in a colloidal drug delivery system, preferably a liposomal drug delivery system. Suitable colloidal drug delivery systems also include nanoparticles, nanocapsules, microparticles or block copolymer micelles. The colloidal drug delivery system encapsulating curcumin or a curcumin analogue is administered parenterally in a pharmaceutically acceptable carrier.