I recently have lost 10kg from replacing two meals per day with those weight loss shakes. I am 176cm tall and weighed 67kg, I got down to 57kg but after a couple of months without the shakes i am back approx 59-60kg. The shakes worked great however, i had to cease them as i was suffering really bad with stomach acid. Is this normal? I would like to do it again as I am still not happy with my weight however I cant because of this problem. I can never stick to normal dieting so I was wondering if anyone has any suggestions as to why I suffer stomach acid when taking these shakes or have another solution that i could have to replace my meals? I also joined the gym, however in that period of time I put on a couple of kilos and looked bigger (from muscle) which i did not like at all. I really dont know what to do from here so any suggestions would be much appreciated. My goal weight is around 55-56kg. PLEASE HELP.....