Cleanses are all bullshit. Doesn't do anything. There's one long term fix you can make that will make you feel like a million bucks -- No sugar. This includes carbs, which your body breaks down into sugar. Just make simple choices, and they'll go a long way. Diet soda instead of regular. eggs instead of pancakes. yogurt instead of muffin. Burger instead of pizza (bun isn't good, but lesser of 2 evils). Veggies side instead of fries. Vodka soda or whiskey instead of beers. SMALL changes that will lead to big results. Steaks or chicken breast for dinner, side of veggies, and some pinto or black beans. Delicious meals, you'll never be hungry.
If you avoid all sugars and carbs for 2 weeks I guarantee you'll lose 10-20lbs and not want to go back.