I have been taking methadone for about 3 years, due to a lower back problem, I take 15mg 3 times a day, but alot of times doesnt stop the pain, so I end up taking 20mg sometimes, that works a little better, but I end up running out before I can get it filled again, usually about 4-5 days I have to go without it, it doesnt seem like much time, but anyone who has taken methadone knows the symptoms Im talking about when you are out! So I end up having to get other pills off the street to cope during this time, usually percs, or lortab. But what I have noticed is, methadone blocks the effects of other drugs until it is fully out of your system,(3-5 days). Is this normal, or just in my mind? I have even gone out drinking and the alcohol doesnt have any effect one me, due to the methadone! IS there any dryg that methadone doesnt block like this? I have heard of a new drug that contains percocet and oxycontin, but Ive never had them yet? Thanks for any help.-Mike