It can slightly help I BELIEVE. One thing I know helps is drinking water and urinating until your pee turns clear. This means you're mostly cleaned out. Not saying this will make you show up negative, though. Be careful to avoid drinking too much water, it can be dangerous. Gatorade helps you keep a good balance between electrolytes and salt. Luckily, opioids only stay in the system for 1-3 days, give it a little more sometimes. I know some people who try these things that they call "water pills", but you'll need to do some research if interested. I still don't 100% believe in these, though.