Compositions and methods for enhancing the absorption of therapeutic polypeptides from the intestines following
oral administration The invention provides a method for increasing the systemic
bioavailability of a polypeptide therapeutic agent undergoing oral, orogastric, nasogastric, or
intragastric administration, said method comprising administering said polypeptide therapeutic agent together with (i) an alginate
oligomer (ii) a compound of Formula (I), or a pharmaceutically acceptable salt thereof, (I) (iii) a compound of Formula (II), or a pharmaceutically acceptable salt thereof, (II) to a portion of the intestines of a human or non-
human animal subject by oral, orogastric, nasogastric, or
intragastric administration, wherein said portion of the intestines is contacted with (i), (ii), (iii) and said polypeptide therapeutic agent in amounts which result in uptake of the polypeptide therapeutic agent from said portion of the intestine. Such methods allow for systemic treatment or prevention of a
disease or condition or complication thereof which is responsive to, or which is prevented by, a polypeptide therapeutic agent via oral, orogastric, nasogastric, or
intragastric administration routes. Further provided are compositions for use in such methods.