I have been on Slim and Save (just 4 packs) for a week and lost nothing. Some years ago with Lighterlife I lost 11 in the first week. I have not cheated and just had black tea/coffee and water. I feel thinner but nothing has moved on the scales. I am on various pills for high blood pressure and take Provera (a progestin) as perimenopausal. Could those be having an effect? I don't know what to do. I think I am in ketosis as have had energy the last couple of days after feeling awful for 5.