I take my Methadone as needed. I took half of one this morning because my pelvic pain was driving me nuts and it has cut the pain down to almost nothing. My Dr. knows I take it this way.

If it's working, go for it. As far as building up in your system, I don't believe it has to build up in your system because it does cut the pain pretty quick.. If your pain is constant you might want to take it regulary but if it's intermittent why take it constantly? I use the Methadone, Lidocaine patches and shots to calm down my pain. Mine hasn't been constant like some peoples have the past couple of years.

I'm glad it's helping you.

Ada