Patent 6890547 was granted and assigned to Amato Pharmaceutical Products, Ltd. on May, 2005 by the United States Patent and Trademark Office.
By blending glycyrrhizin with an ester mixture comprising a C6-18 fatty acid glycerol ester with a C6-18 fatty acid macrogol ester, glycyrrhizin can be efficiently absorbed via mucosae, in particular, digestive mucosae to achieve a therapeutically effective plasma glycyrrhizin concentration.