The different alcohol and drug abuse rehab services which are offered to drug addicted persons in Amherst can vary in a lot of different ways. Quite a few substance abuse rehab programs are offered in a residential or inpatient facility, where clientele reside the entire time they are in rehab which supplies a more conducive treatment setting. Others offer substance abuse treatment services on an outpatient basis which allows for more flexibility, although outpatient centers may not be a suitable alcohol and drug abuse rehab program for individuals in Amherst who are struggling with serious drug or alcohol addiction issues. Regardless of whether inpatient or outpatient alcohol and drug abuse rehabilitation programs are chosen, there are varying lengths of time that individuals will be asked to continue to be in the drug rehabilitation program. For example, quite a few short-term programs offer services for 4 weeks or less, whereas long-term programs will require at least a 3 month stay.