The disclosed technology provides improved drug compositions that provide increased stability, higher drug loading potential, and suitable drug dissolution properties, and methods of making the same. The composition include: (a) a drug component comprising a therapeutically effective amount of a drug; (b) an extended release component comprising a cross-linked polyacrylic acid polymer that is a carbomer homopolymer, carbomer copolymer, carbomer interpolymer, polycarbophil or a mixture thereof; and (c) a buffering component comprising a magnesium containing buffering agent; wherein the drug component makes up at least 50% by weight of the composition.