hi, I learned this the dense way - it took me over a dozen flushes to realize.
Use the pink grapefruit juice - NOT the lemon juice if you're having no big results from it. I always had lemons in the fridge, but pink grapefruit took a shopping trip so I used what I had. MISTAKE EVERY TIME - Well, if not a mistake, a waste of time.
Try it again using pink grapefuit juice and good luck!