I buy mine @ mountainroseherbs.com it is very good quality. I have been cleansing with it for 2 weeks now. I feel great I like to take my l-ornithine with it bec it helps with any groggy feelings that come with the cleansing. I was wondering glaxony, should I stop now and just take Iodine and garlic and the in-between herbs? Or can I keep going, I would like to keep going I think that this is the most success I have ever had with a cleanse. Any advice is appreciated.