Abstract: The present invention relates to pharmaceutical compositions containing heparin or heparin fragments or their derivatives in combination with one or more glycerol esters of at least one fatty acid as single absorption enhancer. The compositions are useful for oral administration, for administration through mucous membranes or for transdermal administration. The compositions will when necessary contain further physiologically acceptable additives, such as diluents and/or carriers, suitable for the adaptation to oral, buccal, rectal, sublingual, nasal, subcutaneous or transdermal administration. The composition according to the invention provide excellent absorption and bioavailability without employing additional enhancers or promoters.

Abstract: The present invention relates to pharmaceutical compostions containing a defined lipid system of at least two lipid components where at least one of the lipid components is amphiphatic and polar and one is nonpolar wherein the pharmaceutically active compound is a heparin or a fragment thereof. In the compositions a water containing solvent also is included in such an amount that discrete lipid particles are present, and said compositions can be adapted to various administration forms such as rectal, oral, buccal, transdermal etc.