Without medical supervision, seizures as a result of Valium withdrawal can result in death, so do not attempt to come off of Valium on your own without medical assistance.
It is not uncommon for marijuana substance abuse treatment admissions to also report the use of alcohol and other drugs.
Many residential inpatient drug rehab programs have been specifically designed for methadone addicted individuals, providing them with a much greater chance at being successful in treatment.
Withdrawal symptoms can make quitting fentanyl and other opiates almost impossible, especially when one attempts to do so on one's own.