Hospital inpatient drug and alcohol treatment for alcohol or drug addiction is very often necessary for people who have certain medical complications linked to their addiction, as is the case with specific types of withdrawal or for persons whose health has been compromised by their addiction. Hospital inpatient drug rehab in Montreal for drug and alcohol problems is often also necessary for those who have co-occurring mental health disorders that will need extensive treatment solutions which may not be available in regular rehab. Persons who wish to receive a medication assisted drug detoxification, as is sometimes the case with individuals addicted to opiates like heroin and prescription pain killers, might also choose to take part in such rehabilitation in a Montreal hospital inpatient drug and alcohol detoxification facility.