IOP can be an effective treatment option for individuals who require a more intensive level of care than traditional outpatient treatment but do not need the round-the-clock support of treatment process. The effectiveness of an IOP, like any addiction, drug abuse, or substance use disorder treatment, depends on factors such as the individual's commitment to recovery, the quality of the program, and the availability of ongoing support. IOPs are generally not recommended for those with severe cases of addiction or co-occurring disorders