A pharmaceutical composition is provided comprising a therapeutically effective amount of pterostilbene, a therapeutically effective amount of curcumin, and a pharmaceutically acceptable carrier. The embodiments of the pharmaceutical compositions can have lipid lowering properties, or alternatively can have properties that can treat oxidative stress, by decreasing inflammation or inflammatory processes contributing to digestive disorders or cancer. A method of treating an individual for an inflammatory disorder is provided, comprising administering to the individual in need of such treatment a pharmaceutical composition including a therapeutically effective amount of pterostilbene, a therapeutically effective amount of a curcumin, and a pharmaceutically acceptable carrier. The combination containing pterostilbene and curcumin is effective for treatment or prevention of oxidative stress, treatment of digestive disorders including inflammatory bowel disease, and/or to reduce or inhibit inflammation, in both animals and in humans.