I've passed a dozen or so stones that were the size of a 50cents piece, so what is "too big"? I'm also taking gold coin grass tincture and drink a gallon of organic apple juice for the 2 days before my flush. Only once have I had anything "get stuck" and it fell apart and came out 2 days later. That sounds scary; the experience was scary, but the pain was much less than that of a gallbladder attack. I'd describe it as a dull, constant pain.