I took 5000 mgs of a watson 853 or what some people call a Norco 8 days ago. I abused these norcos the entire week with varying amounts each day, 4000 here, 6000 there, all the way up to 11,000mgs on one certain day. I just had a urine screening about 8 days later. How long will these amounts stay in my urine since I have not taken any for about 8 days?

While abuse, is wrong, and not healthy for you, if you have a prescription, you will not fail the test all you do is prove they are yours

That's the problem, they are not prescribed to me. I am a little worried about the urine screening and curious to know how long those amounts will stay in my urine?

You shouldn't be taking someone else's drugs if you want to take a drug test and pass.

If they are not prescribed to you, and you are using someone else's medication and are in the US, then both of you can be arrested, tried and convicted of a felony.

What J_9 said.

But to answer your question a little, the half life of Norco is about 4 hours. I don't know how sensitive these tests are or what your peak serum concentration was on the day you took 11,000 mgs, but after about four days that amount should have been reduced to about a millionth what it was on the day you took it.