is there anything i should know about taking methadone?I have sleep apnea and i read that u should not take methadone if u you have it.My dr just put me on methadone.Should i be worried.I let him know that i have sleep apnea and he said that it should not be a problem.I am very worried.I am breaking out in a rash and my skin is very dry.Also having swollen lymph nodes.please help.