Weight loss pills have become popular in recent years. There are two basic types of diet pills or weight loss pills – â?? Prescription???? and â?? no prescription?? pills. The prescription pill: The weight loss prescription pills are treated like drugs. It requires approval from the FDA and are closely regulated. Examples of this type of weight loss pills are Xenical (orlistat), Meridia (Sibutramine) and Phentermine / phentermine. To test its efficacy in weight reduction, these pills are subjected to a series of clinical trials typically to monitor health risks and side effects. No Prescription Pills Non prescription weight loss pills are also called as supplements for weight loss. These medicines are available without a prescription, as they are subjected to minimal FDA regulation only. Examples of this type of pills weight loss pills include Metabolifeâ? ¢ and Herbalifeâ? ¢, as well as fat burners, pills weight loss herbal, stackers, other sports or diet supplements. The difference between prescription and non prescription weight loss pills is becoming narrower. Since some types of prescription pills may not be as powerful or dangerous as weight loss drugs. The exception is that these types of supplements for weight loss are not regulated like prescription pills weight loss. Therefore may be more dangerous if anything. The FDA has recently warned about the loss supplements containing ephedra weight. Therefore, many drug makers are stating as â?? Ephedra free???? by removing ephedra from their weight loss pills. Who can benefit from Weight Loss Pills? Prescribed weight loss pills are designed specifically for the treatment of obesity more than just weight loss. Despite the health risks and side effects, use of diet pills is justified because obesity is a serious condition associated with serious health risks. Supplements for weight loss or non-prescription weight loss pills should be seen in similar light. Do these Weight Loss Pills Work? The answer is Yes and No. With a proper exercise program and diet in relation to medical supervision, weight loss pills or supplements for weight loss can be effective in the short term at least. However, the benefits can disappear quickly, as the body adjusts quickly to many pills to lose weight. Trials of Pills clinically weight loss: The weight loss clinical trials show that using pills for weight loss, weight control long-term not possible. A combination of improved diet and physical activity must be maintained in the long term to maintain weight loss successfully. Consult your doctor before taking diet pills: You should get information from your doctor about the possible dangers and side effects of weight loss pills before taking diet pills. The side effects of taking pills to lose weight: Weight loss pills are less effective as time progresses like most drugs and can lead to addiction. If you experience any of the following side effects, taking the pills should be stopped immediately. Irritability Anxiety or nervousness High blood pressure Insomnia Heart palpitations and heart attacks Chest tightness Vomiting, constipation or constant stomach pain Diarrhea, fever and headaches Dry mouth Dizziness Profuse sweating Blurred vision Hair loss Urinary tract problems Changes in sexual behavior and menstrual cycle. The long-term effects of these diet pills are not known and how they interact with other medications, is also unclear.