So since you're hot on my tail to call me out on several posts katteberry, WHAT diet drug is in Slim-Fast? Have you ever researched the product itself? I had to do a project on the product for a nutrition class and didn't come across any 'diet drug' as an ingredient. It WILL NOT 'MAKE' you lose weight unless you do in fact replace two meals a day with a shake, have a skinny dinner, and incorporate excersise into your daily routine. If you use the shake as a snack, it's the same thing as a protein shake between meals, which is what I'm trying to get across to this woman.It's a low- calorie protein shake that's milk- based. It's a meal replacement in liquid form to wean people away from stuffing their face with so many high and empty calorie foods, which in turn can make you lose weight. The same would happen if you just switched to fruit smoothies or nothing but salads- it's a temporary 'diet' plan, and not something meant for long- term eating habits. Slim-Fast shakes have 200 calories and are just like popping a multi-vitamin- it's the same format hospitals use when patients can't eat solid foods. The difference between that and a Boost shake is that the Slim-Fast tastes better.