Updated March 10, 2017. Often abbreviated as OS, an operating system is powerful, and usually large, program that controls and manages the hardware and other software on a computer. All computers and computer-like devices have operating systems, including your laptop, tablet, desktop, smartphone, smartwatch, router...
Why It Is Used. Methadone is commonly used to treat addiction to opiates (such as heroin). Taken once a day, methadone eases opiate withdrawal for 24 to 36 hours, decreasing the chance of relapse.hy It Is Used. Methadone is commonly used to treat addiction to opiates (such as heroin). Taken once a day, methadone eases opiate withdrawal for 24 to 36 hours, decreasing the chance of relapse.
The most commonly used opiates are heroin, hydrocodone, morphine, and codeine. Heroin is a particularly fast-acting drug with a very short half-life. A saliva test will only be able to detect heroin for the first 5 hours after the last dose, and blood tests work for an average of 6 hours.