| abstract |
An aqueous pharmaceutical preparation is provided containing chloride ion and stably containing chlorhexidine gluconate, characterized in that said preparation further contains at least one pharmaceutically acceptable polycarboxylic acid of the formula I: HOOC-(CR11-CR12)n -COOH (I) wherein n is an integer 1, 2 or 3; i is a positive integer not more than n; R11 and R12, when n=1, independently from each other, are H, -OH or -COOH; each of R11, R12, R21 and R 22, when n=2 , is H, -OH or -COOH, but not all of them are H simultaneously; and each of R11, R12, R21, R22, R31 and R32, when n=3, is H, -OH or -COOH, but two adjacent carbons in no case contain four hydrogen atoms in total; or a pharmaceutically acceptable salt thereof. |