no there is a 660, im currently taking hydro 10/660, i know its not great on the liver but so far liver tests are ok, been on hydro for 3 years since cancer diagnosis, hydro and xanax, great combo lol, still better than being in pain, i have found a great doc who helps me but still use op's occasionally for a stronger dose when needed, or for more when i take a few too many, my doc only gives me so many a month and then im on my own