Ecstasy is not physically addicting.  However, it can be psychologically so and is also possible to build up a tolerance to it.  Generally, people that use it for consecutive days, may build up a short tolerance during that time. For some people it will last longer.  Generally, this tends to go away very quickly. 

Many people mistakenly assume that just because a drug is not physically addicting that it is fine to use. This isn’t true. A psychological addiction can be just as damaging and controlling as one that is physical. In fact, many people find the former (psychological addiction) more difficult to overcome then the latter (physical addition). It is possible to stop using drugs and completely go through detoxification in a matter of days or weeks. While this is a necessary part of recovery, it is only the beginning. Individuals have to figure out what triggers their drug use and what ties them to it psychologically so that they continue to use even when they know better, before they will be able to get clean.  

An individual with an addiction to ecstasy may need to enter into some type of rehab program. Inpatient treatment may be necessary if a person has a really severe addiction. However, in many cases, outpatient treatment will be sufficient, though inpatient treatment may be the right option for individuals who need to get away from their surroundings in order to get clean. 

As stated above, ecstasy is not considered physically addicting. If a person were to suddenly stop taking it, they wouldn’t experience serious withdrawal symptoms. Ecstasy is easy enough to stop using physically. The biggest hurdle is often psychological. Some individuals enjoy the effects of the drug so much that they don’t want to give it up. It is overcoming this psychological pull to 'use' that makes it difficult for some people to overcome their addiction to ecstasy. Fortunately, there is help available for those who want it. Rehab, both outpatient and inpatient, are available to those willing to go through the process and get help.