I have been on a methadone clinic for the past nine years. It took me a few years to stop using heroin. My only remaining problem was chronic insomnia. My primary M D and tried various types of sedatives and found the side effects to be worse than the insomnia itself. The only thing that consistently works with the least amount of side effects is Benadryl (diphenhydramine).However for some reason it always gives me a false positive benzodiazipine result on my bi-monthly urine drug screens. This is leading to a forced detox of methadone due to state and federal regulations.