I eliminated grape-sized balls last spring after starting on capsules containing grapefruit seed extract and oregano. They looked like a couple of whole "grapes", and I hadn't eaten grapes in a year! They were open on one end and had a tough skin (couldn't pierce them either). They sort of looked like the tops of button mushrooms. I'm guessing they were some type of parasite, polys, or maybe a fungi?? They definitely weren't Gallstones though. I've done 12 Liver Flushes and they didn't look like anything from a liver flush!