| abstract |
Zolpidem salts having improved physical stability do not exhibit a melting endotherm corresponding to zolpidem free base when heated at 5° C./minute from about 25° C. to 250° C. The salts are generally easy to reproduce, even on an industrial scale and are easier to handle due to the increased stability than the known zolpidem tartrate. The zolpidem salts are typically pharmaceutically acceptable salts and can be used in formulating pharmaceutical compositions and in pharmaceutical uses; e.g. as a hypnotic. |