| abstract |
A liquid composition administered orally comprising 2% to 40% guaifenesin and a vehicle comprising: a. 5% to 25% of a polyoxyalkylene block copolymer wherein said polyoxyalkylene block copolymer corresponds to the formula: (See formula) x has a value of 1 to 130, and has a value of 1 to 72 and x '' has a value from 0 to 130; b. from 30% to 90% of a hydrophilic solvent; and c. 5% to 45% water; wherein the percentages of polyoxyalkylene block copolymer, hydrophilic solvent and water are such that the vehicle is in the region (1) limited by the line segments AB, BC, CD and DA of the following figure: (See formula ) |