Yes, I have found that thread in the meantime. Thanks a lot anyway.
I also found some other stories that I find very encouraging.
I think I will start short preparation fasts and cleansings, so that I can do a full 21 days water fats in a couple of months.
I have been on a lot of drugs for a long time and I am scared of going cold turkey. I am afraid that all the toxins might surge into my blood stream and cause some sort of a toxic shock. I will slowly make my introduction into what seems to be a wonderful world of fasting.