In one aspect, the present invention is directed to a dry, flowable and compressible composition, useful as a pharmaceutical excipient, which composition comprises a mixture of hydrophobic and hydrophilic poly(ethylene oxide)-polypropylene oxide)-poly(ethylene oxide) block copolymers, and which possesses a Carr index of less than about 20. In other aspects, the present invention is directed a pharmaceutical composition comprising such adjuvant and a pharmaceutically active ingredient； as well as to a method of making the compositions.
