It can never be an all cure formula. It should always be combined with a proper weight loss diet to bear fruit. In addition to it physical activity is equally needed to loose weight. Weight loss pills are two categories called prescription pills and over the counter pills. Both these pills treat obesity. But prescription pills for loosing weight are recommended by a medical practitioner. Over the counter weight loss pills with various brand names are not equally reliable.These pills to loose weight are actually appetite suppressants. They work as absorption inhibitors. They block fats from being absorbed and prevent obesity. Does weight loss medications really work is a common curiosity. The answer lies in the fact that it produces moderate effect as per the studies done the efficacy of these medications. Moreover the effects of the pills also vary from person to person. And most importantly advice from a professional is essential before going for any of these pills that claim to help loose weight. They may show short term effects but there is no clinical proof in support their claims.On the other hand there are reports of addiction, reduced tolerance and other fatal side effects of these weight loss pills. Various side effects may include increased heart beats high level blood pressure, sweating, impotency, insomnia and constipation. Nowadays Hoodia diet pills are claimed to be the best weight loss pills. Medical researchers claim that these pills are natural, effective and free from side effects. That is why it has become very popular within a short span of time. Hoodia is a plant of South African origin and pills are made from the extracts of these plants. Clinical studies done on the effects of these pills on animals have shown the suppressed appetite among these animal. And in humans also it is said to be effective in controlled food intake. Moreover no side effects have been noticed till date.But getting pure Hoodia pills is not so easy. There are many over the counter pills that claim to be a Hoodia product. Most of the products except three are said to be contaminated. Therefore it is always safe to consult a doctor to get it recognized if the pills you are going to buy are Hoodia products or not.