I would smoke a few small bowls everyday for the past 4 years. I am 5’10 140lbs. I stopped smoking about a week before I started the detox. I was in a rush to get clean so I got this. I read and followed the instructions closely. I experimented myself on the 4th day and I came out clean. I don’t really have any complaints. The pills are a bit big but I just broke them in half and took them. The detox liquid doesn’t taste so great, but it’s only a small amount. Try to avoid eating anything spicy, learned that one the hard way. I never had any stomach pain or discomfort though. It really is a great and effective product. The customer service was very helpful in answering all my questions and putting any concerns I had at ease. Thank you.