I think Liver Flushes are most likely bunk. I tried a couple and bunch of green "stones" were floating in the toilet afterward, but never felt any better. There's people here that have done dozens of them and never reported feeling any different. I think I've only seen one person here report they felt like it work. That's like a success rate of only 1% lol, so don't waste your effort on them.
Make sure you're not under-eating or eating a diet too high in fats and too low in good carbs, because those are the two biggest problems I see around here.