How good is cranberry juice

[kassdog]

Just out of curiousity, I'm not a big fan of staying healthy or anything but I plan to start working out and eating right within the next month. I recently have been drinking nothing but water and cranberry juice(about 10-12 glasses of water a day and about 3/4gallon-1gallon of cranberry juice a day for the past 3 days). The reason for me drinking so oddly is a drug test and I was wondering how good it is for you. I'm drinking store brand 100% juice instead of the 27% I usually see. I'm not asking if it will work for the drug test but just if it's good for you in general and if it is I will continue to drink it after the test.