Went to the emergency room this past weekend with indescribable pain. Waited 1.5 hrs to be seen. Not good! Ordered Chanca and began taking yesterday. I’m doing about 5 tablets a day because of my acute phase. Slept like a baby last night. Not sure if this was the Chanca or not. Kidney stone pain comes and goes. Sometimes nothing and sometimes hell. Doc has me on Flomax and Naproxen and gave me a month to pass 5 mm stone. I have other stones as well and one 3.7 mm causing pain near ureter. I will post in another week and am praying Chanca Piedra will help me in the long run. Only time will tell. Definitely worth a try!