When you take two benzodiazepines together, like Xanax and Valium, you are much more likely to experience an overdose and dependency. Even though crack cocaine provides a quick, intense high and the high quickly wear off, that doesn t mean it leaves the system that rapidly. Even though snorting Xanax has little to no effect, snorting any type of drug is dangerous and quickly leads to addiction. Due to the chemical makeup of Ambien being similar to benzodiazepines, the withdrawal symptoms are very similar and uncomfortable.