Hi, I have went from a size 18 to my now size ten and just started another round over the weekend. I order from a pharmacy in Canada that is very reputable and have had no ill side effects since I have been using HCG. I have used it on and off for almost a year now and have not gained any of it back. My last round I finished at the end of December, so it has been 7 months and still no weight gain. I used to get them from my dr, but it was just way to expensive. So I ordered them online and did them myself, and that is how I prefer to do it now because when I mix it myself, I know that it is fresh. HCG is good for about 14days or so before it starts to lose its potency.