Is methadone the same thing as trazodone?

No, not at all. Methadone is a pretty hardcore opiate, with notable effects lasting 24 hours for some. Trazodone is an old time anti depressant, now used more for its sedative effects in the treatment of insomnia. Trazodone can be taken easily in doses of 100 mg for sleep, while taking that much methadone could be harmful.