But the fact is that most of these commercials are a fake and does exactly the opposite of what they promise. These diet pills do not make a person lose weight, not even a single kilogram. These commercials just make money by selling their fake products and then vanish from the market when people come to know about the reality. Americans spend millions of amount to buy these diet pills but only 10-15% of them are genuine material. Rest of it is just a bunch of fake products which is sold with the sole purpose of stealing money from the customers. There are also those diet pills available in the market which are really effective and really makes a person lose weight. These diet pills are quite expensive than the normal diet pills but these are the really effective ones. If a person wants to lose weight in no time then he should blindly go for these diet pills and he would be surely satisfied with the results. There are many kinds of diet pills available in the market of which one should be aware of. There are some diet pills which should not be consumed without the prescription of a doctor. These are called prescription diet pills. These are first prescribed by a doctor or a physician then only the person should buy and consume these diet pills. Without prescription, these diet pills are illegal to be consumed as they posses various side effects. There is another type of diet pills that are also available in the market. These are called over the counter weight loss pills. These are basically those diet pills which make a person slim and make their body skinny so that its user can look more gorgeous than before. These pills are quite expensive as compared to other types of diet pills and its manufacturers do a lot of research work before actually launching them in the market. These are also used as food supplements so that the person can get all the nutrients without getting fat into his body. So these kind of diet pills are very effective than other diet pills but these pills must be taken with proper advice and supervision of a doctor other wise the person can get affected with their side effects.