In women: when sterility is due to ovarian failure (functional), ovarian dysfunction, polycystic ovary syndrome, lactational amenorrhea, psychogenic amenorrhea and some cases of secondary amenorrhea
Methadone is part of a category called opioids. It was created by German doctors during World War II. When it arrived in the United States, it was used to treat people with extreme pain. Today, your doctor may use it as part of your treatment for an addiction to heroin or narcotic painkillers. It works a lot like morphine does. You can take it as a tablet, a powder, or a liquid. It must be prescribed by a doctor. People who take it illegally often inject it, which exposes them to diseases like HIV.