Yes, I got a herx on the second session, and it is the first time I have had a herx like that - I have had dieback from candida treatments before. This felt very different - I had the feeling that my immune system was trying to raise my temperature. I also had a lot of sweating. It lasted for 3 days at its worse though i still have the smelly underarm sweating. It was not so bad really but I had to rest in bed and do detoxing. The 4th day was amazing as I was able to do loads of housework with no after effects. Of course I overdid it I am getting ready to give myself another herx. It does take some time to get the bacteria out - some say a year. I do think that I am doing so well because of all the other preparation work I have done with diet etc. This should lesson the herxes considerably.