It was dissolved. This is me assuming it was a kidney stone, I can't think of anything else what it could've been. I can't imagine the pain of passing a fully fledged one through. My rod felt as if it were burning so much I filled a lil tupperware box with water and placed my unit it, had I not locked my door and someone walk in, it would've looked like I was shagging the floor. It did provide some well needed relief however, not much, but anything was enough.