Ill tell you from working 5 yrs as a certified pharmacy tech.. Vicodin is the brand name. the cheaper, yet exactly the same, version is Hydrocodone/Apap. Apap is a technical term for acetametophen(Tylenol) on the bottle there are 2 different strengths that matches up with the way the name is typed..10/325. 10mg of hydrocodone, 325mg of tylenol. If you build up a tolerence to the hydrocodone and start to take in more your literally shitting out your kidneys from all the tylenol youre taking in. Be sure to limit yourself...Your getting real dangerous when youre taking in 1200mg of tylenol. But dont let yourself go to where your taking more then 10 at a time.. Speaking from personal experience from addiction you can build yourself up and have a tolerence so strong for it that its possible for someone of 160 pounds to take up to 50 at one time. But Im paying for it now.. And the withdrawls from the addiction I had were cold chill, insomnia, hot flashes, severly achy all over, and feeling nauseated..felt like the flu..