The potential for tolerance or dependence after using benzodiazepines even for a short period of time is high and even greater when they are used for longer periods.
Tolerance occurs when your body gets used to taking a drug and higher doses are needed to experience the same effects. Some people who use frequently may not experience the same relaxing effects of benzodiazepines as their bodies become used to a certain dose of the drug.
Dependence on benzodiazepines occurs when it becomes difficult to make it through the day without taking these drugs. Some people who use frequently may crave the drug, or find it difficult to function without it. When the body becomes physically dependent on benzodiazepines it may stop producing its own chemicals that help sleep and relaxation.