How can you cleanse cocaine from your system?

Don't do cocaine for a month or two. It's the only way. Drinking bleach water won't cleanse your system. It may even damage your insides if you have too high of a bleach concentration. And don't ever drink drain cleaner, another common ill-conceived idea. It will corrode you stomach, your esophagus, and your mouth so that you willhave to eat a liquid diet the rest of your life. Most strongly alkaline and acidic substances will do that to you.