Compositions for pharmaceutical and other uses comprising clear aqueous
solutions of bile acids which do not form any detectable precipitates over selected
ranges of pH values of the aqueous solution and methods of making such solutions.
The compositions of the invention comprise water; a bile acid in the form of a
bile acid, bile acid salt, or a bile acid conjugated with an amine by an amide
linkage; and either or both an aqueous soluble starch conversion product and an
aqueous soluble non-starch polysaccharide. The composition remains in solution
without forming a precipitate over a range of pH values and, according to one embodiment,
remains in solution for all pH values obtainable in an aqueous system. The composition,
according to some embodiments, may further contain a pharmaceutical compound in
a pharmaceutically effective amount. Non-limiting examples of pharmaceutical compounds
include insulin, heparin, bismuth compounds, amantadine and rimantadine.