Are you taking this illegally? And if so, why? Are you on methadone because of previous addiction, or as a painkiller? Because if you're an experienced drug abuser, you probably have a higher tolerance than most and a need to feel drugs more than most. Your brain is sensitized to this. But taking high doses of benzos can be very dangerous, you can not only overdose and die even though you're not feeling whatever it is you're trying to feel, but stopping benzos abruptly can cause seizures. So please, why are you doing this?