Scam. This is a very-low-calorie diet with an expensive placebo. You'll lose weight by restricting calories, and spend money for something that will do you no good. Ask your personal physician whether a crash diet is really right for you. Better, start hanging out with people who are into physical fitness and join in. Unlike a crash diet, this will result in real, sustained good results.
Absolutely. You must do the diet under supervision of a qualified physician, injectable HCG not drops, and strict adherence to the original 500 calorie diet and not a modified version of it with higher calories. You can lose 1-2 lbs of fat per day. Some physicians call this diet dangerous or won't work, but lack an understanding about the diet and it's proven safety. In use since 1950s.