I used PGCL many years ago. It makes you defecate intensely within 20 minutes after taking it. After you take it, you need to be around a toilet. It is effective, I did lean out and lose my water retention. Was it worth it...? Well, I don't take it anymore, and haven't in a long time. It may be worth it for contest prep though. As with anything, the best thing to do is take it as directed and see if it is worth it to you. The intense shitting is annoying and strange. You have to watch dehydration with PGCL, it isn't the safest thing to take and it can be annoying. If you have access, try it once and determine if you want to keep using it.