I have used 1 and 1/2 bottles at 60 drops per day. I believe it helped. I than started using the bitters and GCG so I am afraid it hasn't been a controlled study. I just want the stones out so I am trying a lot of things. I also did the Clarkiaparasite cleanse.
The Chanca Piedra is tasty and it feels very calming in my system. Talk to Les Martin at raintreehealth.com
Best of Luck, Lynn